Gram Staining

Also Knwon as "the Gram's method" is an empirical method of differentiating bacterial species into two large groups (Gram-positive and Gram-negative) based on the chemical and physical properties of their cell walls.


Gram staining is one of the most useful staining procedures in bacteriological laboratory. The technique is widely used as a tool for differentiating Gram-negative and Gram-positive bacteria, as a first step to determine the identity of a particular bacterial sample.





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