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 […]
Biological safety cabinet (BSC) is an engineering control intended to protect laboratory workers, laboratory environment and work materials from exposure to infectious or biohazardous aerosols and splashes. Such aerosols and splashes may be generated while […]
Amies transport medium is a widely used and effective semisolid medium for the transportation of swab specimens to the microbiology laboratory. Placing swabs in a moist container or transport medium prevents drying and death of […]
Plasmids are extra-chromosomal genetic elements that replicate independently of the host chromosome. They are small, circular (some are linear), double-stranded DNA molecules (mostly) that exist in bacterial cells and in some eukaryotes. The sizes of […]
The autoclave is a sealed device (similar to a pressure cooker) that kills microorganisms using saturated steam under pressure. The use of moist heat facilitates the killing of all microorganisms, including heat-resistant endospores which is […]
Bacteriological analysis of water is one component of drinking water quality analysis. Water is screened for the presence of fecal contamination by testing for the presence of an indicator microorganism. Indicator microorganisms are ones that […]
This post was most recently updated on August 26th, 2019Giemsa stain is a type of Romanowsky stain, named after Gustav Giemsa, a German chemist who created a dye solution. It was primarily designed for the […]
This post was most recently updated on August 26th, 2019Brain Heart Infusion (BHI) broth is a general-purpose liquid medium used for the cultivation and maintenance of a wide variety of fastidious and non-fastidious microorganisms, including […]
This post was most recently updated on August 26th, 2019Gram staining requires the use of different chemical reagents which can be purchased in ready to use forms from commercial suppliers or gram stain reagents can […]
This post was most recently updated on August 26th, 2019Bacteria are often preserved in microbiology laboratory for many purposes such as to re-examine or to characterize further or to send to a national reference laboratory […]
This post was most recently updated on August 26th, 2019Selenite broth is used as an enrichment medium for the isolation of Salmonella and Shigella from stool, urine, water and food products. It is the most […]
This post was most recently updated on August 26th, 2019Staib medium also known as bird seed agar is a selective and differential medium for isolation of Cryptococcus neoformans from clinical specimens and differentiation of it […]
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