Last updated on June 21st, 2021Nitrate reduction test is used for the differentiation of members of Enterobacteriaceae on the basis of their ability to produce nitrate reductase enzyme that hydrolyzes nitrate (NO3–) to nitrite (NO2–) which […]
Last updated on June 17th, 2021Hektoen Enteric (HE) Agar was introduced in 1968 by Sylvia King and William I. Metzger. They formulated HE Agar medium while working at the Hektoen Institute in Chicago, to increase […]
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 2nd, 2021When an isolated colony (18-24 hour growth) of a suspected bacterium is emulsified in sodium deoxycholate or sodium taurocholate (commonly known as bile salt), it lyses the cell wall of […]
Last updated on July 4th, 2021Resistance to Malaria A number of genetic factors provide some resistance to infection by various Plasmodium spp. Hemoglobin S, thalassemia, and glucose-6-phosphate dehydrogenase or G6PD deficiency are associated with increased resistance to Plasmodium falciparum. […]
Last updated on June 11th, 2021Epsilometer test (E- test ) is an ‘exponential gradient’ method of determination of antimicrobial resistance. The E-test has been developed to provide a direct quantification of antimicrobial susceptibility of microorganisms. This […]
Last updated on July 4th, 2021Modified Hodge test (MHT) is a simple phenotypic test for the detection of the presence of carbapenemase enzyme in bacteria. A positive MHT test is observed in Klebsiella pneumoniae carbapenemase […]
Last updated on June 2nd, 2021Ebola is one of the scariest, highly infectious, and deadly diseases, ever known to Humankind. It transmits via the body fluids of a person who is sick with or had […]
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