If your doctor suspects you have an infection, they may order a culture and gram stain to check for bacteria. If bacteria are present, this test can also help your doctor learn if the bacteria are ...

With delicate hues of purple and pink, a lab technique called gram staining has reliably characterized bacteria for more than a century. Yet many scientists are mistaken about why the vivid method ...

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 ...

First, gram-negative bacteria have a thin cell wall that is about 1.5 to 10 nanometers across, whereas gram-positive bacteria have a thick cell wall measuring about 20 to 80 nanometers.

The Google doodle shows Gram carrying out an experiment, a close up of the bacteriologist, a microscope and bacteria particles. Gram was appointed professor of medicine at the University of ...

The names themselves date back to 1884, when Danish bacteriologist Hans Christian Gram developed a staining procedure to view bacteria under the microscope. First, ...