such as E. coli, have a thin peptidoglycan layer sandwiched between a porous outer membrane and an inner membrane. In this simplified diagram of gram staining, bacterial cells are first treated ...

A team of researchers at the University of California, Los Angeles (UCLA) has introduced a virtual Gram staining technique that could transform how microbiologists stain and classify bacteria.

Escherichia coli is an example of a common Gram negative bacterium. The Gram stain procedure was developed by Hans Christian Gram in the 1800s and was one of the first techniques taught to ...