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Introduction of String Test String test is a special test of bacteria to identify Vibrio cholerae (String test positive) from Vibrio species and other bacteria like Aeromonas species and Plesiomonas shigelloides. This assay can perform on a glass slide or plastic petri dish, suspending overnight …
Introduction of Gram-Positive Bacteria Identification Identification of Gram-positive bacteria is a little bit harder than Gram-negative bacteria since the most common bacterial etiological agents are Gram-negative bacteria and the vendors or suppliers are directly involved in supplying common tests reagents and test kit accessories. Due …
Triple Sugar Iron Agar Test The triple Sugar Iron (TSI) Agar test is a combo test and is useful for the identification of mainly gram-negative bacteria, on the basis of the following tests- Composition of Triple Sugar Iron Agar Triple Sugar Iron Agar (TSI) (Oxoid, England) …
Introduction Methylene Blue Stain, also known as methylene blue aqueous is an ordinary stain. It is used for capsule stain as well as simple staining for a rapid and easy way to determine cell shape, size, and arrangements of bacteria. It is also made easier to …
Ziehl -Neelsen Stain Ziehl–Neelsen stain is a type of acid-fast stain and it is named after the surnames of two German doctors who modified the stain. One is the bacteriologist Franz Ziehl (1859–1926) and other is the pathologist Friedrich Neelsen (1854–1898). It was initially introduced …
Introduction SIM stands for sulfide, Indole, and Motility and SIM medium is applied for the differentiation of gram-negative enteric bacilli. SIM test assists to isolate the bacteria on the basis of sulfide production, indole formation, and motility and thus SIM test is a combination of three …
Introduction The urease test is also known as the urea hydrolyzation test or urea test and it is important for certain bacteria and fungi that possess this enzyme which hydrolyzes urea releasing ammonia into the medium. This produces a change in the pH of the …
Introduction of Gram Stain Gram stain is the most commonly used routine stain in microbiology for the identification of microbes and also to know the evidence of etiological agents in clinical specimens. Gram staining is a differential stain and thus it applies to differentiate Gram-positive …