Gram-positive bacteria show blue or purple after Gram-staining in a laboratory test. They have thick cell walls. Gram-negative bacteria show pink or red on staining and have thin walls.

The fluid will also be tested with a gram stain test and a bacterial culture. In addition to a positive or negative result, the test will provide a description of the bacteria in the infection.

Deoxyribonucleic acid ... of bacteria that produce a positive result with a violet dye staining technique, due to the presence of thick layer of peptidoglycan in their cell walls (bacteria that do not ...

this test can also help your doctor learn if the bacteria are gram negative or gram positive. The difference between gram-negative and gram-positive bacteria can affect their recommended treatment ...

And it prevents the synthesis of another cell wall component, teichoic acid, by binding to ... for drug discovery: mining Gram-negative and Gram-positive bacteria for antibiotics that attack ...

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 ...

Bacteria with thick peptidoglycan are called gram positive. If the peptidoglycan layer is thin, it's classified as gram negative. A gram-positive bacillus doesn't have an outer cell wall beyond ...