Last updated on June 21st, 2021The genus Serratia currently contains >15 recognized species, seven of which have been isolated from human clinical specimens. S. marcescens is the most important member of the genus. Recognized as […]
Last updated on June 25th, 2021Yersinia pestis is gram-negative rods responsible for highly fatal zoonotic disease, plague. Plague is one of the greatest killers known to mankind with at least three pandemics reported in history. […]
Last updated on June 25th, 2021Klebsiella pneumoniae is a Gram-negative rod-shaped bacteria of genus Klebsiella and the family Enterobacteriaceae. They are members of normal intestinal flora of humans and animals and may be isolated from a variety of environmental […]
Last updated on June 21st, 2021Proteus are Gram-negative rod-shaped bacteria of the family Enterobacteriaceae. They are widely distributed in nature and also occur as normal intestinal flora of humans. An opportunistic pathogen, they are one […]
Last updated on June 21st, 2021Methyl Red (MR) test determines whether an organism performs mixed acid fermentation and produces stable acid end products. MR indicator is used to determine the pH after an enteric Gram-negative rod […]
Last updated on June 21st, 2021Catalase is an enzyme, which is produced by microorganisms that live in oxygenated environments to neutralize toxic forms of oxygen metabolites; H2O2. The catalase enzyme neutralizes the bactericidal effects of […]
Last updated on June 21st, 2021Enterobacteriaceae family contains a large number of genera that are biochemically and genetically related to one another. Many of the traditional or familiar bacteria are found in this family e.g. […]
Last updated on June 21st, 2021Each of the letters in “IMViC” stands for one of these tests. “I” is for indole; “M” is for methyl red; “V” is for Voges-Proskauer, and “C” is for citrate, […]
Last updated on June 17th, 2021MUG is an acronym for 4-methylumbelliferyl-β-D-glucuronide. Since 97% of Escherichia coli strains produce the enzyme β-D-glucuronidase, MUG test can be used for rapid identification of E. coli. Verotoxin-producing E. coli (E. coli […]
Last updated on June 17th, 2021Whenever you see the name of this test i.e. ‘Triple Sugar Iron Agar‘, you have to remember that it’s a test which has three sugar (lactose, sucrose, and glucose) and also […]
Last updated on June 21st, 2021Shigellae are Gram-negative, non-motile, non-spore-forming, rod-shaped highly infectious bacteria of the Enterobacteriaceae family. Shigella species include; Shigella sonnei, S. boydii, S. flexneri, and S. dysenteriae. Classification There are 4 major subgroups and […]
Last updated on June 21st, 2021Citrate utilization test is commonly employed as part of a group of tests, the IMViC (Indole, Methyl Red, VP and Citrate) tests, that distinguish between members of the Enterobacteriaceae family based […]
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