Salt 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 grow in the presence of a variable amount...
Tag: Gram Positive Cocci
Pyrrolidonyl Arylamidase (PYR) test is a rapid test that is used for the presumptive identification of group A beta-hemolytic streptococci and enterococci. PYR test is also used for the...
Catalase test is done to detect the presence of enzyme catalase, which is produced by microorganisms living in oxygenated environments. They use catalase enzyme to neutralize the bactericidal effects...
Gram stain is the most important staining procedure in Microbiology. Most bacteria can be broadly classified as Gram-positive or Gram-negative. Gram-positive bacteria stain purple, whereas...
Anti-streptolysin O Titer (ASOT): Principle, Procedure, and Results
Most people infected with group A streptococci produce anti-streptolysin O (ASO) antibodies. In infections caused by β-hemolytic streptococci, streptolysin-O is one of the two hemolytic...
Novobiocin Susceptibility Test: Principle, Procedure, Results
Novobiocin test is used to differentiate coagulase-negative staphylococci (CONS) and presumptively identify the isolate as Staphylococcus saprophyticus (novobiocin resistant). It is...