Compared with other methods, urine Gram stain moderately predicted gram-negative bacteria but added little value to UTI diagnosis in the ED, raising questions about its clinical utility.

Gram-negative meningitis is an infection of the meninges caused by gram-negative bacteria. These bacteria get their name from their result on a gram stain test.

The Gram stain is almost always the first step in the preliminary identification of a bacterial organism. Gram was then appointed a professor of medicine at the University of Copenhagen in 1900.

Influential scientist Hans Christian Gram left a durable mark on microbiology thanks to the pioneering staining technique he invented – and he’s now being celebrated with a Google Doodle on ...

Hans Christian Gram, the inventor of the Gram staining technique, was a pioneering biologist who devised the system of classification which led to as many as 30,000 formally named species of ...