Last updated on June 21st, 2021Weil-Felix is a nonspecific agglutination test that detects anti-rickettsial antibodies in patients’ serum. Weil-Felix test is based on cross-reactions that occur between antibodies produced in acute rickettsial infections with antigens […]
Last updated on May 2nd, 2021Viral Hemorrhagic Fever (VHF) is a group of illnesses that are caused by several distinct families of viruses. It is a severe multisystem syndrome. Some of these viruses cause mild […]
Last updated on May 20th, 2021Bacterial transformation is one of the three horizontal gene transfer mechanisms found in bacterial cells. The other two horizontal gene transfer mechanisms are conjugation (Transfer of F Plasmid & Transfer […]
Last updated on June 14th, 2021The F+ strain which contains the plasmid gene as an episome (i.e. F plasmid becomes integrated into the host cell genome at one of the several possible sites of a chromosomal gene) […]
Last updated on June 14th, 2021Conjugation is one of the three mechanisms of DNA exchange between bacteria, the other being transformation, and transduction. Conjugation occurs between two living cells, involves cell to cell contact, and […]
Last updated on June 14th, 2021In a bacterial population, DNA can be transferred from one organism to another by the horizontal transfer mechanism (apart from vertical inheritance). The DNA thus transferred by lateral/horizontal method can […]
Last updated on June 14th, 2021In Transduction, DNA is transferred from one cell to another through the agency of viruses. Genetic transfer of host genes by bacteriophage occurs in two ways-generalized transduction and specialized transduction. Specialized […]
Last updated on June 14th, 2021In Transduction, DNA is transferred from one cell to another through the agency of viruses. Genetic transfer of host genes by bacteriophage occurs in two ways-generalized transduction and specialized transduction. […]
Last updated on July 1st, 2021Thiosulfate citrate bile salts sucrose (TCBS) agar is a selective as well as differential culture medium used for selective isolation of Vibrio spp from a variety of clinical and nonclinical […]
Last updated on May 17th, 2021Microbiologists work in public health laboratories, hospital laboratories, reference or independent laboratories, and physician office laboratories. Microbiologists must be aware of what the physician needs and as well as what […]
Last updated on May 30th, 2021Bacteria grow on solid media as colonies. A colony is defined as a visible mass of microorganisms originating from a single mother cell. Key features of these bacterial colonies serve […]
Last updated on June 20th, 2021Chocolate Agar (CAP or CHOC) is a nonselective, enriched medium used for the isolation and identification of fastidious pathogens. Chocolate agar is prepared by heating blood agar, which in turn […]
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