[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fxLN3MUwXCdr5RPjwZYIDpOj8CHyjOmngWTgoKXPtZbg":3,"$fQlUfpe1Wmiwe80dAtbz7_GW1kOpC0ipoYPvIVwnu5bU":28,"$f3Ft0rKFJHppdzE-vuveecxx1BUcg9iOlMLtyzf_MJDg":72},[4,8,12,16,20,24],{"title":5,"slug":6,"path":7},"About Microbeonline.com","about-microbeonline-com","\u002Fabout-microbeonline-com",{"title":9,"slug":10,"path":11},"About Me","about-me","\u002Fabout-microbeonline-com\u002Fabout-me",{"title":13,"slug":14,"path":15},"Advertise with Us","advertise-us","\u002Fadvertise-us",{"title":17,"slug":18,"path":19},"Privacy Policy","privacy-policy","\u002Fprivacy-policy",{"title":21,"slug":22,"path":23},"Commonly Used Abbreviations in Microbiology","abbreviations","\u002Fabbreviations",{"title":25,"slug":26,"path":27},"Microbes","microbes","\u002Fmicrobes",{"type":29,"data":30},"blog",{"slug":31,"title":32,"description":33,"author":34,"createdDate":35,"lastUpdatedDate":36,"draft":37,"category":38,"tags":39,"image":40,"body":41,"_id":42,"related":43},"fungal-staining-methods-and-uses","Fungal Staining Methods and Uses","Fungal staining methods — complete comparison of 18 techniques including KOH, LPCB, calcofluor white, GMS, PAS, and India ink. Master reference table with organism-specific stain selection guide for clinical mycology.","Sushmita Baniya","2022-09-13","2025-12-29",false,"mycology",[],"","Fungal staining technique helps in clear visualization for studying the morphological characteristics of fungi that aid in detecting and identifying fungi, thus playing a crucial role in diagnosing fungal infections. Fungal staining techniques can be broadly categorized as wet mount preparation and differential staining.\n\nA wet mount is a fungal staining technique performed by suspending the specimen in the reagent solution and observing it in the [microscope](\u002Fparts-of-microscope-and-their-functions\u002F). Potassium hydroxide (KOH) wet mount, lactophenol cotton blue (LPCB) stain, India ink stain or Nigrosin stain, calcofluor white stain, PHOL stain, neutral red stain, and diazonium blue b (DBB) stain are some of the wet mount technique for identifying fungus.\n\nDifferential staining is a fungal staining technique that uses more than one stain. The color contrast aids in identification of the organisms. The different types of differential stains used for fungus identification are hematoxylin and eosin (HE) stain, May-Grunwald Giemsa (MGG) stain, diff-quick stain, periodic acid-Schiff (PAS) stain, Gridley’s fungal stain, Gromori’s methenamine silver stain, Mayer’s mucicarmine stain, Masson-Fontana (MF) stain, Schmorl’s melanin stain, Toluidine blue O stain, acridine orange stain, and fluorescent-antibody stain.  Gram stain and modified acid-fast stain are also useful to identify fungal isolates.\n\n## All Fungal Staining Methods at a Glance\n\n### Primary\u002Feveryday stains (used in most clinical laboratories routinely)\n\n| Stain | Category | What it detects | Key organisms | Speed |\n| --- | --- | --- | --- | --- |\n| KOH mount | Wet mount | Dissolves keratin, reveals fungal elements | Dermatophytes, Mucorales, all molds\u002Fyeasts | Minutes (rapid) |\n| LPCB mount | Wet mount | Stains chitin in fungal cell wall blue | Identification from culture (mold morphology) | Minutes |\n| India ink\u002FNigrosin | Negative stain | Outlines capsule against dark background | *Cryptococcus neoformans* | Minutes |\n| Calcofluor white | Fluorescent wet mount | Binds chitin, fluoresces under UV | All fungi, especially *Pneumocystis*, dermatophytes | Minutes |\n| Gram stain | Differential | Fungi stain gram-positive (purple) | General fungal screening; *Pneumocystis* (Weigert's mod.); *Nocardia*\u002F*Actinomyces* (Brown-Brenn mod.) | Minutes |\n\n### Histopathology\u002Ftissue stains (performed in pathology laboratories on biopsy material)\n\n| Stain | What it detects | Key organisms | Notes |\n| --- | --- | --- | --- |\n| H&E | General tissue morphology | Hyphae, yeast nuclei, *Blastomyces* double-refractile wall, *Coccidioides* spherules | Standard first-pass tissue stain |\n| PAS | Glycogen, polysaccharides, mucin | *Cryptococcus*, *Histoplasma*, *Aspergillus*, *Blastomyces* | → [Full PAS Staining Guide](https:\u002F\u002Fmicrobeonline.com\u002Fperiodic-acid-schiff-pas-staining-principle-procedure-and-application\u002F) |\n| GMS (Grocott's modification) | Fungal cell wall polysaccharide | **Most widely used tissue fungal stain**; detects *Pneumocystis jirovecii* | Stains fungi\u002Fbacteria black; can detect non-viable organisms |\n| Gridley's fungal stain | Similar to PAS, uses chromic acid | Mycelia and conidia (purple) | Does NOT stain Actinomycetes |\n| Mayer's mucicarmine | Mucin | *Cryptococcus* (deep rose-red); *Rhinosporidium* | Capsule-specific |\n| Masson-Fontana | Melanin, argentaffin granules | Dematiaceous (phaeoid) fungi — *Curvularia*, *Bipolaris* | For phaeohyphomycosis |\n| Schmorl's melanin stain | Melanin (reducing substances) | Dematiaceous fungi | Diagnoses phaeohyphomycosis |\n\n### Specialized\u002Fblood and cytology stains\n\n| Stain | What it detects | Key organisms | Notes |\n| --- | --- | --- | --- |\n| May-Grünwald Giemsa (MGG) | Blood\u002Fbone marrow smear | *Histoplasma capsulatum* (intracellular) | → [Full Giemsa Stain Guide](https:\u002F\u002Fmicrobeonline.com\u002Fgiemsa-stain-principle-procedure-and-results\u002F) |\n| Diff-Quik | Rapid blood\u002Fvaginal smear | General fungal screening | 15-second modification of Wright-Giemsa |\n| Toluidine blue O | Metachromatic, rapid frozen section | *Pneumocystis jirovecii* cysts only (not trophozoites) | 10-20 second stain time |\n| Acridine orange | Nucleic acid fluorochrome | Broad — *Aspergillus*, *Blastomyces*, *Candida*, *Coccidioides*, *Cryptococcus*, *Histoplasma* | Requires fluorescence microscope |\n| Fluorescent-antibody stain | Antigen-antibody (immunofluorescence) | *Sporothrix*, *Aspergillus*, *Blastomyces*, *Coccidioides*, *Cryptococcus*, *Histoplasma* | Highly specific, technically demanding |\n\n### Niche\u002Fresearch-use stains\n\n| Stain | What it detects | Key organisms |\n| --- | --- | --- |\n| PHOL stain | Similar to LPCB (formalin + methylene blue instead) | *Prototheca* spp., general fungal isolates |\n| Neutral red | Viability (live vs dead fungal cells) | Used when culture fails despite positive microscopy |\n| Diazonium Blue B (DBB) | Differentiates basidiomycetes from ascomycetes | *Trichosporon* (DBB+) vs *Geotrichum* (DBB−) |\n\n## Potassium Hydroxide (KOH) Mount\n\n![KOH wet mount (fungal staining technique) - Yeast and hyphae on KOH wet mountImage source:Frederick](\u002Fblogs\u002FKOH-image.png)Figure: Yeast and hyphae on KOH wet mount Image source:Frederick\n\nPotassium hydroxide (KOH) is a strong alkali, and it digests and dissolves the tissue material in the skin, hair, nail, or sputum sample for the clear observation of fungi. Depending on the clinical specimens, the potassium hydroxide wet mount can be prepared on a slide or tube.\n\nIt is the primary screening method for identifying fungal elements in clinical samples. KOH wet mount helps to diagnose dermatophytosis (ringworm), mucormycosis, chromoblastomycosis, *Blastomyces dermatitidis* infection, etc.\n\nRead more: [**KOH wet mount preparation**](https:\u002F\u002Fmicrobeonline.com\u002Fkoh-preparation-test-principle-procedure-results-uses\u002F)\n\n## Lactophenol Cotton Blue\n\n![LPCB - Aspergillus flavuson LPCBImage source:Yuri](\u002Fblogs\u002FLPCB-image.png)Figure: Aspergillus flavus on LPCB Image source: Yuri\n\nLactophenol cotton blue (LPCB) wet mount preparation is a widely used routine laboratory technique. Phenol acts as the disinfectant and kills the fungus, lactic acid preserves the fungal morphology, glycerol prevents drying, and cotton blue stains the outer wall of the fungus. It is performed in two ways: standard tease mount and cellophane tape.\n\nLPCB wet mount detects and identifies the fungus from the culture medium. LPCB stains the fungal elements in blue color.\n\n**Read more: [LPCB wet mount](https:\u002F\u002Fmicrobeonline.com\u002Flactophenol-cotton-blue-lpcb-mounts-principle-staining-protocol\u002F)**\n\n## Gram stain\n\n[Gram staining](\u002Fgram-staining-principle-procedure-results\u002F) is the differential method for detecting bacteria, but it also helps identify fungi. Fungi appear as Gram-positive (purple color). While examining clinical specimens, detecting fungal elements (hyphae, yeasts, or mycelia) helps us diagnose fungal infections.\n\nThere are two modifications of the Gram stain for staining the tissues.\n\n- Weigert’s modification of the Gram stain helps to identify *Pneumocystis* cysts.\n- Brown and Brenn’s modification of the Gram stain is used to identify *Nocardia*, \\*Actinomyces, and *Microsporidium* spp.\n\n## India Ink and Nigrosin Stain\n\n![india ink fungal staining technique - Negative staining of Cryptococcal capsulesImage source:Doering lab](\u002Fblogs\u002Findia-image.png)Figure: Negative staining of Cryptococcal capsules Image source: Doering lab\n\nIndia Ink and Nigrosin stain are the acidic dyes used in negative staining. Either India ink or Nigrosin stain helps to stain [capsules](\u002Fcapsule-stain-principle-procedure-results\u002F). Nigrosin stain is preferred over India stain because it can last more than one year, and no carbon particles will appear in the solution.\n\nThese stains detect capsule-forming fungi such as *Cryptococcus neoformans* which causes cryptococcal meningitis. The capsule appears as a clear halo against the dark background.\n\n## Calcofluor White Stain\n\n![Calcofluor white stain - Fluorescent staining of yeast with Calcofluor white stainImage source:Kunetskiy](\u002Fblogs\u002FCalcofluor-image.png)Figure: Fluorescent staining of yeast with Calcofluor white stain Image source: Kunetskiy\n\n[Calcofluor white stain](\u002Fcalcofluor-white-staining-principle-procedure-and-application\u002F) is the fluorescent dye that stains the chitin present in the cell wall of fungi. It is a water-soluble, colorless dye and a fluorescent whitener. It fluoresces light-blue in color when exposed to UV light in a [fluorescent microscope](\u002Ffluorescence-microscope-principle-types-applications\u002F).\n\nCalcofluor white staining is used to detect hyphae, pseudohyphae, and yeast. Under the fluorescent microscope observation, the fungus fluoresces green. It also helps to detect non-culturable fungi like [*Pneumocystis jirovecii*.](https:\u002F\u002Fmicrobeonline.com\u002Fpneumocystis-jirovecii-properties-pathogenesis-lab-diagnosis\u002F)\n\n## Hematoxylin and Eosin Stain\n\n![Haematoxylin and Eosin stain - Hematoxylin and Eosin stain showingAspergillusspp.Image source: DOI:10.1002\u002Flary.25429](\u002Fblogs\u002FHE-images2.png)Figure: Hematoxylin and Eosin stain showing *Aspergillus spp*. Image source: DOI:10.1002\u002Flary.25429\n\nHematoxylin stains the cell’s nuclei in blue, and eosin stains the cytoplasm in pink. H and E stain helps to differentiate the nuclear and cytoplasmic parts. Hematoxylin stains the nuclear components like the heterochromatin and nucleoli. Eosin stains the cytoplasmic components like collagen and elastic fiber, muscle fibers, and red blood cells.\n\nHematoxylin and Eosin stain is used to examine the frozen sections of tissues, fine needle aspirates, and paraffin fixed embedded tissue. It can be useful in examining the biopsy sample when cancer is suspected. H and E stain helps visualize hyphae, yeast cells (nucleus), the double refractive cell wall of *Blastomyces, and the spherule of Coccidioides*.\n\n## May-Grunwald Giemsa Stain\n\nMay Grunwald-Giemsa stain is made from two stains, May Grunwald stain, and [Giemsa stain](\u002Fgiemsa-stain-principle-procedure-and-results\u002F). May Grunwald stain consists of methylene blue and eosin. Giemsa stain consists of methylene blue, eosin, and azure B.\n\nMay-Grunwald Giemsa stain detects the [*Histoplasma capsulatum*](https:\u002F\u002Fmicrobeonline.com\u002Fhistoplasma-capsulatum-properties-diseases-laboratory-diagnosis\u002F) in the peripheral blood smear. This staining technique stains the blood and bone marrow smears. Differential counting of the blood cells can be one. It helps to visualize the chromosomes and identify the mast cells.\n\n## Diff-Quik Stain\n\nDiff-Quick Stain consists of fixative, stain solution I, and stain solution II. This is a ‘dip’ stain and uses the Coplin jars. It is based on the modification of the Wright Giemsa stain. Diff-Quick stain is better than Wright Giemsa Stain because the 4 min procedure completes in just 15 seconds.\n\nDiff-Quick stain is useful for rapid staining and differentiation of the smears, like blood and vaginal smears. Fungi appear in as dark blue color.\n\n## Periodic Acid-Schiff Stain\n\n![PAS stain (fungal staining technique) - Periodic Acid-Schiff showing fungal hyphaImage source: DOI:10.1155\u002F2011\u002F821259](\u002Fblogs\u002FPAS-image.png)Figure: Periodic Acid-Schiff showing fungal hypha Image source: DOI:10.1155\u002F2011\u002F821259\n\n[The periodic acid-Schiff (PAS) is a staining technique](https:\u002F\u002Fmicrobeonline.com\u002Fperiodic-acid-schiff-pas-staining-principle-procedure-and-application\u002F) that identifies the presence of glycogen, polysaccharides, and mucin in the tissue. These tissue sections may be formalin-fixed, paraffin-embedded, or frozen. PAS stains the nuclei blue and fungi in deep pink or magenta color.\n\nPAS stain is useful for identifying *Cryptococcus neoformans*, *Histoplasma capsulatum*, *Aspergillus fumigatus*, and *Blastomyces* in tissue samples because their cell walls and capsules contain a significant amount of carbohydrates.\n\n## Gridley’s Fungal Stain\n\nGridley’s Fungal stain is like the PAS stain but uses chromic acid as the oxidizing agent. This technique combines Bauer, Schiff, and aldehyde fuchsin techniques.\n\nGridley’s fungal stains the fixed tissue sections. It stains the mycelia and conidia in deep purple color and elastic tissue and mucin background in the yellow color. It does not stain the actinomycetes.\n\n## Gomoris Methenenamine Silver Stain\n\nGomori’s methenamine silver stain (GMS) is useful for the demonstration of the polysaccharide content of the fungus in tissue sections. The most widely used stain is Grocott’s modification of the GMS stain, known as Grocott’s Gomoris Methenenamine Silver Stain. GMS stain can stain degenerated and non-viable fungi too. It stains the fungi and bacteria black, mucopolysaccharide dark grey, and tissue pale green.\n\nGMS stain identifies the *Pneumocystis jiroveci*, which causes the pneumocystosis.\n\n## Mayer’s Mucicarmine Stain\n\nMayer’s Mucicarmine stains the mucin, a secretion produced by different epithelial cells. Epithelial cells produce mucin in excess amounts during carcinoma or in some inflammations.\n\nMayer’s Mucicarmine stain detects the *Cryptococcus*and *Rhinosporidium* spp. in tissue. It stains the *Cryptococcus* spp. deep rose red, nuclei black, and the tissue in yellow color. In the case of rhinosporidiosis, mucicarmine stain the sporangium and endospores.\n\n## Masson-Fontana Stain\n\nMasson-Fontana (MF) stain detects a cell’s argentaffin granules and melanin. It is useful for examining the frozen or paraffin-embedded tissue sections. Melanin is the brown, black pigment that is also present in the human body’s hair, skin, retina, and iris. Argentaffin granules are present in carcinoid tumors. Mosson-Fontana stains the melanin and argentaffin granules in black color and nuclei in red.\n\nMasson-Fontana (MF) stain detects melanin-containing dematiaceous (phaeoid) fungi like *Curvularia lunata* and *Bipolaris hawaiiensis* in tissue.\n\n## Schmorl’s Melanin Stain\n\nSchmorl’s Melanin stain is the melanin-based staining method that detects the presence of the reducing substances in the tissues like melanin, keratin, keratohyalin, etc. Melanin is present in the cell wall of the dematiaceous (phaeoid) fungi. This technique uses the reducing properties of melanin to stain granules in blue-green color. It stains the nuclei in pinkish-red and cytoplasm a pale-pink color.\n\nSchmorl’s melanin stain is useful for diagnosing phaeohyphomycosis in tissue biopsy.\n\n## Toluidine Blue O Stain\n\nToluidine Blue is a metachromatic dye. It stains the frozen tissue section rapidly in about 10-20 seconds. Toluidine blue O stain stains the cysts of *Pneumocystis jirovecii* as reddish blue or dark purple against a light blue background. It detects only the cyst form, not the trophozoite form.\n\nToluidine blue O stain is useful for detecting the *Pneumocystis jirovecii* in the lung biopsy and bronchoalveolar lavage (BAL) fluid.\n\n## Acridine Orange Stain\n\n[Acridine orange stain](\u002Facridine-orange-staining-principle-procedure-results-applications\u002F) is the fluorochrome dye that binds the cells’ nucleic acids. When fungi are stained with the acridine dye and viewed under ultraviolet light, RNA fluoresces orange-red and the DNA as green. The differential staining of the DNA and RNA requires a pH of 6. Acridine orange stains the human epithelial cell, inflammatory cell, and background debris, which appear pale green to yellow color.\n\nAcridine orange stain is useful in demonstrating the fungi in tissue sections and smear rapidly. It is also useful for identifying the fungus *Aspergillus* spp., *Blastomyces dermatitidis*, *Candida albicans*, *Coccidioides immitis*, [*Cryptococcus neoformans*](https:\u002F\u002Fmicrobeonline.com\u002Fcryptococcus-neoformans-properties-pathogenesis-diseases-lab-diagnosis\u002F), *Histoplasma capsulatum*, and *Rhinosporidium seeberi*in tissue sections.\n\n## Fluorescent-Antibody Stain\n\nFluorescent-antibody stain is an antigen detection test in which the antibody is tagged with the fluorochrome. It detects fungal antigens in pus, blood, cerebrospinal, and paraffin sections of formalin-fixed tissues.\n\nThe fluorescent antibody is useful in detecting *Sporothrix schenckii*, *Aspergillus* spp., *Blastomyces dermatitidis*, *Cocciodioides immitis*, *Cryptococcus neoformans*, \\*Histoplasma capsulatum, etc.\n\n## PHOL Stain\n\nPHOL stain is derived from the scientist’s name Pal, Hasegawa, Ono, and Lee. The LPCB and PHOL have similar functions but differ in the stain’s composition. In PHOL stain, formalin replaces phenol, and methylene blue replaces cotton blue.\n\nPHOL stain is useful in examining the fungal isolates and *Prototheca* species.\n\n## Neutral Red Stain\n\nNeutral Red Stain is a water-soluble dye. It can pass through the intact plasma membrane and the lysosome of viable cells can store it. When cell membrane and lysosomes are damaged, dye uptake decreases.\n\nNeutral Red Stain is used to differentiate the viable and non-viable fungus. The microscopic observation and the fungal culture are done to diagnose dermatophytosis. Sometimes fungus can be observed during direct microscopic observation, but it may not grow in the culture medium. In such cases, a neutral stain helps to know if the fungus is viable because it will stain the viable cell red and won’t stain the non-viable cell.\n\n## Diazonium Blue B stain\n\nDiazonium Blue B stain (DBB) is useful in differentiating the species of two genera of fungi, basidiomycetes, and ascomycetes. DBB positive will stain dark-red or violet red, and DBB negative won’t stain.\n\nDiazonium Blue B stain differentiates  *Trichosporon* spp (basidiomycetes) from the *Geotrichum*spp. (ascomycetes). *Trichosporon* spp. is DBB positive and *Geotrichum* spp. is DBB negative.\n\n## Quick Clinical Reference — \"I Suspect This Organism, Which Stain Should I Use?\"\n\n| Suspected organism\u002Fcondition | Best first-line stain(s) | Confirmatory stain |\n| --- | --- | --- |\n| Dermatophyte infection (ringworm) | KOH mount | Culture + LPCB of isolate |\n| *Cryptococcus neoformans* (CSF) | India ink | Mucicarmine (tissue); CrAg antigen test |\n| *Pneumocystis jirovecii* pneumonia | Calcofluor white or Toluidine blue O | GMS (tissue); Weigert's Gram modification |\n| Mold identification from culture | LPCB mount | Slide culture for sporulation pattern |\n| *Histoplasma* in blood\u002Fbone marrow | May-Grünwald Giemsa | PAS or GMS on tissue |\n| Dematiaceous fungi (phaeohyphomycosis) | H&E (pigmented hyphae visible directly) | Masson-Fontana or Schmorl's (confirms melanin) |\n| Invasive fungal infection, tissue biopsy | H&E (initial screen) | GMS or PAS (definitive) |\n| *Trichosporon* vs *Geotrichum* differentiation | — | Diazonium Blue B (DBB) |\n| Fungal viability when culture fails | — | Neutral red stain |\n| *Nocardia* or *Actinomyces* in tissue | Brown-Brenn modified Gram | Modified acid-fast (partial acid-fastness of Nocardia) |\n\n## How to Learn and Remember Fungal Staining Methods\n\n### The calibration: practical — too many similar-sounding stains to keep straight\n\nWith 18 stains covered in this article, the challenge is purely practical: which stain do you reach for in which situation? The tables above solve this for clinical use; below is the exam-focused memory layer.\n\n### One sentence that captures the entire clinical relevance\n\n*\"KOH gets you a same-day answer, India ink gives you a one-glance diagnosis of cryptococcal meningitis, and GMS is the stain pathologists trust most when a patient's biopsy needs a definitive fungal answer.\"*\n\n### The 5 stains worth memorising cold\n\nIf you only remember five fungal stains for clinical practice and exams, make them these — they cover the overwhelming majority of real clinical scenarios:\n\n1. **KOH mount** — rapid bedside\u002Flab screening of skin, hair, nail, sputum\n2. **India ink** — *Cryptococcus* in CSF (the clear halo is unmistakable and unforgettable)\n3. **Calcofluor white** — modern rapid fluorescent alternative to KOH, especially good for *Pneumocystis*\n4. **GMS** — the pathologist's gold-standard tissue stain for any suspected fungal infection\n5. **LPCB** — identifying what you've grown in culture\n\n### Key exam facts in one table\n\n| Question | Answer |\n| --- | --- |\n| What does KOH actually do to the specimen? | Dissolves keratin\u002Ftissue material, leaving alkali-resistant fungal elements intact |\n| Why is India ink described as \"negative staining\"? | The ink stains the background dark; the capsule remains clear\u002Funstained, creating a halo |\n| Which stain is specific for Pneumocystis cysts (not trophozoites)? | Toluidine Blue O (and GMS) |\n| Which two Gram stain modifications are used for fungi\u002Frelated organisms? | Weigert's (Pneumocystis); Brown-Brenn (Nocardia, Actinomyces) |\n| What is the most widely used tissue fungal stain in pathology? | GMS (Grocott's modification of Gomori's methenamine silver) |\n| Which stain detects dematiaceous (pigmented) fungi specifically? | Masson-Fontana or Schmorl's melanin stain |\n| What does Diazonium Blue B (DBB) differentiate? | Basidiomycetous yeasts (Trichosporon, DBB+) from ascomycetous yeasts (Geotrichum, DBB−) |\n| Can GMS stain non-viable\u002Fdead fungi? | Yes — unlike viability-dependent stains, GMS stains polysaccharide cell wall regardless of viability |\n\n**References**\n\n 1. Chick, E. W., & Chick, E. W. (1961). Acridine Orange Fluorescent Stain for Fungi. *Archives of Dermatology*, *83*(2), 305–309. \u003Chttps:\u002F\u002Fdoi.org\u002F10.1001\u002Farchderm.1961.01580080135015>\n 2. Ebenye, C. M. (2012). A case of disseminated histoplasmosis detected in peripheral blood smear staining revealing AIDS at terminal phase in a female patient from Cameroon. *Case Reports in Medicine*, *2012*. \u003Chttps:\u002F\u002Fdoi.org\u002F10.1155\u002F2012\u002F215207>\n 3. Gridley, M. F. (1953). A Stain for Fungi in Tissue Sections. *American Journal of Clinical Pathology*, *23*(3_ts), 303–307. \u003Chttps:\u002F\u002Fdoi.org\u002F10.1093\u002Fajcp\u002F23.3_ts.303>\n 4. Haque, A. (2010). Special Stains Use in Fungal Infections. *Connection*, 187–194. \u003Chttp:\u002F\u002Fwww.dako.com\u002Fus\u002F28829_connection_14.pdf#page=187>\n 5. Kaplan, W. (1973). Direct fluorescent antibody tests for the diagnosis of mycotic diseases. *Annals of Clinical Laboratory Science*, *3*(1), 25–29.\n 6. KAPLAN, W., & IVENS, M. S. (1960). Fluorescent antibody staining of Sporotrichum schenckii in cultures and clinical materials. *The Journal of Investigative Dermatology*, *35*(3), 151–159. \u003Chttps:\u002F\u002Fdoi.org\u002F10.1038\u002Fjid.1960.99>\n 7. Lowrey, T. (1986). A modified sulfation-toluidine blue technique for the demonstration of fungi in tissue sections: A brief report. *Journal of Histotechnology*, *9*(1), 23–24. \u003Chttps:\u002F\u002Fdoi.org\u002F10.1179\u002Fhis.1986.9.1.23>\n 8. Naka, W., Hanyaku, H., Tajima, S., Harada, T., & Nishikawa, T. (1992). Application of Neutral Red Staining for Evaluation of the Viability of Dermatophytes in Human Skin Scales. *Nippon Ishinkin Gakkai Zasshi*, *33*(2), 207–211. \u003Chttps:\u002F\u002Fdoi.org\u002F10.3314\u002Fjjmm.33.207>\n 9. Piaton, E., Fabre, M., Goubin-Versini, I., Bretz-Grenier, M. F., Courtade-Saïdi, M., Vincent, S., Belleannée, G., Thivolet, F., Boutonnat, J., Debaque, H., Fleury-Feith, J., Vielh, P., Egelé, C., Bellocq, J. P., Michiels, J. F., & Cochand-Priollet, B. (2016). Guidelines for May-Grünwald–Giemsa staining in haematology and non-gynaecological cytopathology: recommendations of the French Society of Clinical Cytology (SFCC) and of the French Association for Quality Assurance in Anatomic and Cytologic Pathology (AFAQAP). *Cytopathology*, *27*(5), 359–368. \u003Chttps:\u002F\u002Fdoi.org\u002F10.1111\u002Fcyt.12323>\n10. Schnadig, V. J., & Woods, G. L. (2009). Histopathology of fungal infections. *Clinical Mycology*, 79–108. \u003Chttps:\u002F\u002Fdoi.org\u002F10.1016\u002FB978-1-4160-5680-5.00005-0>\n11. Walker, D. H., & McGinnis, M. R. (2014). Diseases Caused by Fungi. In *Pathobiology of Human Disease: A Dynamic Encyclopedia of Disease Mechanisms*. Elsevier Inc. \u003Chttps:\u002F\u002Fdoi.org\u002F10.1016\u002FB978-0-12-386456-7.01710-X>\n12. West, K. L., Proia, A. D., & Puri, P. K. (2017). Fontana-Masson stain in fungal infections. *Journal of the American Academy of Dermatology*, *77*(6), 1119–1125. \u003Chttps:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.jaad.2017.02.052>\n13. Procop, G. W., & Pritt, B. S. (Eds.). (2014). *Pathology of Infectious Diseases*. Elsevier.\n14. Guarner, J., & Brandt, M. E. (2011). Histopathologic diagnosis of fungal infections in the 21st century. *Clinical Microbiology Reviews*, 24(2), 247–280. \u003Chttps:\u002F\u002Fdoi.org\u002F10.1128\u002FCMR.00053-10>","3cece13e-13fb-496d-8bb6-218edc7683ff",[44,52,59,65],{"slug":45,"title":46,"description":47,"author":34,"createdDate":48,"lastUpdatedDate":49,"draft":37,"category":38,"tags":50,"image":40,"_id":51},"yeast-structure-reproduction-and-uses","Yeast: Structure, Reproduction, and Uses","Yeast structure, reproduction (budding, fission, sexual life cycles), and clinical relevance — how Candida and other pathogenic yeasts relate to general yeast biology, pseudohyphae formation, and why understanding budding matters for diagnosis.","2023-11-09","2026-06-26",[],"66bbb9db-83e1-4a92-96e1-69b13f321608",{"slug":53,"title":54,"description":55,"author":34,"createdDate":56,"lastUpdatedDate":36,"draft":37,"category":38,"tags":57,"image":40,"_id":58},"aspergillus-morphology-clinical-features-and-lab-diagnosis","Aspergillus: Morphology, Clinical Features, and Lab Diagnosis","Aspergillus: complete species comparison (fumigatus, niger, flavus, terreus, glaucus, nidulans), morphology identification guide, clinical disease spectrum, and lab diagnosis. 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He is the founder of Microbe Online, one of the leading free microbiology education resources on the web, covering bacteriology, mycology, parasitology, immunology, and clinical laboratory diagnostics written from direct experience in both the classroom and the diagnostic laboratory.*","cbd6452a-a19b-480b-84af-ab189b6c6d09",441,{"slug":81,"name":68,"description":40,"image":40,"body":40,"postCount":82},"ashma-shrestha",81,{"slug":84,"name":34,"description":40,"image":40,"body":40,"postCount":85},"sushmita-baniya",32,{"slug":87,"name":88,"description":40,"image":40,"body":40,"postCount":89},"samikshya-acharya","Samikshya Acharya",20,{"slug":91,"name":92,"description":40,"image":40,"body":40,"postCount":93},"alisha-tripathi","Alisha Tripathi",5,{"slug":95,"name":96,"description":40,"image":40,"body":40,"postCount":97},"aastha-shrestha","Aastha Shrestha",10,{"slug":99,"name":100,"description":40,"image":40,"body":40,"postCount":101},"guest-author","Guest Author",2,{"slug":103,"name":104,"description":40,"image":40,"body":40,"postCount":105},"srijana-khanal","Srijana Khanal",18,{"slug":107,"name":108,"description":40,"image":40,"body":40,"postCount":109},"dr-poonam-acharya","Dr. Poonam Acharya",1,{"slug":111,"name":112,"description":40,"image":40,"body":40,"postCount":113},"nisha-rijal","Nisha Rijal",50]