This post was most recently updated on August 26th, 2019Streptococcus pyogenes is the leading cause of uncomplicated bacterial pharyngitis and tonsillitis commonly referred to as strep throat. Acute diseases associated with Streptococcus pyogenes occur chiefly in the respiratory tract (sinusitis, otitis), bloodstream (sepsis, endocarditis, […]
This post was most recently updated on December 10th, 2019Staphylococcus and Micrococcus both are Gram positive cocci (GPC). Both of these cocci are non-motile, non-sporing and Catalase Positive. Both of these organisms are normal flora of […]
This post was most recently updated on August 26th, 2019Popularly 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 […]
This post was most recently updated on August 26th, 2019Staphylococcus and Streptococcus are two most common pathogenic gram positive cocci of medical importance. They share some of the important properties. Common characteristics shared by of […]
This post was most recently updated on May 2nd, 2019Hippurate is the glycine conjugate of benzoic acid. When hippurate is hydrolysed by an organism glycine and benzoic acid are formed. In the classical test (48 […]
This post was most recently updated on December 27th, 2018Streptococci are Gram positive cocci either diplococci (lanceolate shaped; S. pneumoniae) or in chains. They are catalase negative (An important test which differentiate it from another […]
This post was most recently updated on April 20th, 2019Bile-esculin test is widely used to differentiate Enterococci and Non-enterococcus group D streptococci, which are bile tolerant and can hydrolyze esculin to esculetin, from non-group D […]
This post was most recently updated on April 26th, 2018Salt Tolerance Test is used in the identification of enterococcal group D Streptococcus on the basis of their salt tolerance. The ability of the bacteria to […]
This post was most recently updated on May 21st, 2016Pyrrolidonyl Arylamidase (PYR) test is a rapid test which is used for the presumptive identification of group A beta-hemolytic Streptococci and Enterococci. PYR test is available […]
This post was most recently updated on October 20th, 2019Catalase is an enzyme, which is produced by microorganisms that live in oxygenated environments to neutralize toxic forms of oxygen metabolites; H2O2. The catalase enzyme neutralizes […]
This post was most recently updated on August 26th, 2019The cell wall of Gram negative bacteria is more complex than those of Gram positive bacteria. Gram negative bacteria contain an extra layer of cells called […]
This post was most recently updated on August 26th, 2019The test principle, procedure and interpretation presented here are based on Latex Anti-Streptolysin O (ASO) test. It is a rapid latex agglutination test for the qualitative […]
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