Elek test is an in vitro immunoprecipitation (immunodiffusion) test to determine whether or not a strain of Corynebacterium diphtheriae is toxigenic. A test strip of filter paper containing...
Category: Bacteriology
Streptococcus Pyogenes (GAS): Characteristics, Diseases, Tests
Popularly known as "flesh-eating bacteria", Streptococcus pyogenes is one of the pathogenic gram-positive cocci. Streptococcus pyogenes, or Group A streptococcus (GAS) is mostly known for...
Streptococcus spp (S. pyogenes and S. pneumoniae) Staphylococcus and Streptococcus are the two most common pathogenic gram-positive cocci of medical importance. They share some important...
Modified oxidase test (microdase) is recommended for Gram-positive, catalase-positive cocci, only. The microdase test is a rapid method to differentiate Staphylococcus (-ve) from Micrococcus +ve) by...
The motility test is used to determine whether an organism is motile or non-motile. Motile organisms contain flagella which helps them to travel beyond the point of inoculation. Motile bacteria are...
Lecithinase test or Nagler's reaction is a biochemical test used to identify organisms that liberate phospholipases (lecithinases) e.g. Clostridium perfringens. The alpha (α) toxin of C. perfringens...