Neisseria meningitidis Virulence Factors

Last updated on May 20th, 2021Capsular polysaccharides Neisseria meningitidis strains are frequently encapsulated and 13 different capsular serogroups have been found so far. These capsular polysaccharides protect the meningococci from the action of phagocytic cells […]

Laboratory Diagnosis of Bacterial Disease

Laboratory diagnosis of Syphilis

Last updated on June 4th, 2021Syphilis is a sexually transmitted disease caused by the bacterium Treponema pallidum. Syphilis has diverse clinical manifestations and shares many clinical features with other treponemal and nontreponemal diseases (because of this, […]

Laboratory Diagnosis of Bacterial Disease

FTA-ABS Test: Principle, Procedure, Results

Last updated on May 30th, 2021Fluorescent treponemal antibody-absorption (FTA-ABS) test is an indirect fluorescent antibody technique used as a confirmatory test for syphilis. FTA-ABS is the first serological test to become positive following infection i.e., 3-4 […]