Last updated on June 2nd, 2021Cary-Blair transport medium can be used to transport clinical specimens suspected to contain enteric pathogens, including Shigella, Salmonella, Vibrio cholerae, and Escherichia coli O157:H7. Since this transport medium has a […]
Last updated on June 21st, 2021Salmonella-Shigella (SS) agar is used for selective isolation and differentiation of Salmonella and Shigella. It is used for the isolation, cultivation and differentiation of gram-negative enteric microorganisms from both clinical […]
Last updated on June 21st, 2021API (Analytical Profile Index) 20E is a biochemical panel from bioMerieux, Inc. for the identification and differentiation of members of the family Enterobacteriaceae. The plastic strip holds twenty mini-test chambers containing […]
Last updated on June 21st, 2021The Voges-Proskauer (VP) test is used to determine if an organism produces acetylmethylcarbinol from glucose fermentation. Voges-Proskauer is a double eponym, named after two microbiologists working at the beginning of […]
Last updated on June 21st, 2021Salmonella is a member of the family Enterobacteriaceae. It is a Gram-negative bacilli, motile and non-lactose fermenter. The genus can be divided into two species (S. enterica and S. bongori), […]
Last updated on June 17th, 2021 Sample: Fresh diarrheal stool or stool collected in Cary Blair transport medium. Macroscopic examination: Rice watery stool with mucus flecks The laboratory diagnosis of cholera is based on colony […]
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 12th, 2021The cell wall of Gram-negative bacteria is more complex than those of Gram-positive bacteria. Gram-negative bacteria contain an extra layer of cells called outer membrane or lipopolysaccharide (LPS) layer which […]
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 6th, 2021Campylobacter usually causes diarrhea (often bloody). It is the most common cause of gastroenteritis worldwide, enterocolitis, especially in children. It causes systemic infection (rarely) in children and debilitated adults. Systemic infections […]
Last updated on June 21st, 2021Bacterial cells have a wide variety of sizes, shapes, and arrangements. They are too small to see through the naked eye. The unit of measurement used for microorganisms is the […]
Last updated on June 18th, 2021Lipopolysaccharide (LPS) layer also called the outer membrane is the outermost layer present only in the cell wall of gram-negative bacteria. Braun’s lipoprotein tightly links this outer membrane of the […]
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