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Blastomyces dermatitidis is a thermally dimorphic fungus that grows as a mycelial form in the environment and as a thick-walled budding yeast in tissues (at 37°C). It causes blastomycosis, a chronic granulomatous and suppurative disease [...] -
This post was most recently updated on December 14th, 2019 Tinsdale agar base medium was developed by Tinsdale for the selective isolation and differentiation of C. diphtheriae from diphtheroids. Billings later modified the medium improving [...] -
This post was most recently updated on December 14th, 2019 Traditionally, Cystine Trypticase Agar (CTA) supplemented with a 1% carbohydrate solution was used to determine acid production by Neisseria and related species. This test is [...] -
Furazolidone (Furoxone) disk test is performed as a disk susceptibility procedure using commercially available furazolidone disks. Staphylococci are inhibited by furazolidone but micrococci and related species are resistant. This is one of the commonly used [...] -
Identification of fungi depends largely on their macroscopic features (colony characteristics, growth rate, color, texture, diffusible pigment, exudates, aerial and submerged hyphae) and microscopic features (arrangement of spores and sporing bodies). Arrangements of conidiophores and [...]
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This post was most recently updated on August 26th, 2019 Streptococcus pyogenes is the leading cause of uncomplicated bacterial pharyngitis and tonsillitis commonly referred to as strep throat. Acute diseases associated with Streptococcus pyogenes occur chiefly in the respiratory tract (sinusitis, otitis), bloodstream (sepsis, [...] -
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This post was most recently updated on December 10th, 2016 Enterobacteriaceae family contains a large number of genera that are biochemically and genetically related to one another. Many of the traditional or familiar bacteria are [...] -
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The direct fluorescent antibody (DFA) test is a rapid microscopic procedure for detecting the presence of a particular antigen (typically a specific protein on the surface of a virus, bacterium or other microbes) using a [...] -
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