Gram Stain Overview

Gram staining is an empirical method of differentiating bacterial species into two large groups based on the chemical and physical properties of their cell walls. The method is named after its inventor, the Danish scientist Hans Christian Gram , who developed the technique in 1884 to discriminate between pneumococci and Klebsiella pneumoniae bacteria. It is used to differentiate bacterial species into two large groups based on the chemical and physical...