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Introduction of Vibrio cholerae Serotyping Vibrio Serotyping helps to differentiate serotypes of Vibrio. Serotypes refer to separate groups within a species of microorganisms that all share a similar property. More specifically, each serotype has the same number of antigens on its surfaces. For example, V.cholerae O1 serovar Inaba, V. cholerae O1 serovar …
Introduction of Haemophilus Serotyping Haemophilus Serotyping helps to differentiate serotypes of Haemophilus influenzae. Serotypes refer to separate groups within a species of microorganisms that all share a similar property. More specifically, each serotype has the same number of antigens on its surfaces. For example, encapsulated strains of Haemophilus influenzae may …
Introduction of Shigella Serotyping Shigella Serotyping helps to differentiate serotypes of Shigella. Serotypes refer to separate groups within a species of microorganisms that all share a similar property. More specifically, each serotype has the same number of antigens on its surfaces. For example, Shigella flexneri serotype 1, 2, 2a, S. sonnei, and S. …
Introduction of Widal Test The Widal test is an agglutination test employed in the serological diagnosis of enteric fever. It is also applicable in febrile agglutinin tests. The test is named after Georges Fernand Isidore Widal, a French physician and bacteriologist. Salmonella antibody starts appearing in the …
Introduction of ABO and Rh Typing ABO blood grouping and Rh typing are the most common blood group systems. There are nearly 300 blood group systems so far discovered. Other than ABO and Rh are MNS, Lutheran, Kell, Duffy, etc. Karl Landsteiner discovered ABO ( …
Introduction of Antinuclear Antibody (ANA)Test The antinuclear antibody (ANA)test is a type of blood test in which serum tested for autoantibodies ( SLE) directed against native deoxyribonucleic acid and other nuclear constituents are produced. It involves a variety of tissues and is associated with a wide range …
Introduction of GeneXpert Test GeneXpert test is a molecular test for tuberculosis diagnosis by detecting the presence of Mycobacterium tuberculosis (bacteria), as well as testing for resistance to the drug rifampicin. Principle of GeneXpert Test GeneXpert test is a highly sensitive and specific test for tuberculosis(TB) diagnosis that detects DNA sequences …
Principle of Decarboxylase-Dihydrolase Test Lysine, ornithine, and arginine are the most common amino acids which use to detect an organism’s ability to decarboxylate or hydrolyze an amino acid in a decarboxylase medium, forming an amine that produces an alkaline pH. The basal medium for the …