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...
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Due to a lack of contrast, the structural details of organisms cannot be seen under a light microscope. Hence, we use dyes to stain cells. Dyes bind with cellular constituents, producing color...
Common names of some infectious diseases are funny and don't relate to their scientific names or etiology. But some of these names are derived from the mode of transmission of diseases and in which...
1. Which of the following bacteria was not discovered by Robert Koch? a) Bacillus anthracis b) Mycobacterium...
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...
Meningitis is an inflammation of the membranes covering the brain and spinal cord known as the meninges. The most common etiologic agents of acute meningitis are enteroviruses (primarily...