What is a sputum Gram’s stain? A sputum Gram’s stain is a laboratory test that allows your doctor to diagnose a bacterial infection in your respiratory tract. They may order it if you have ...

Compared with other urine analysis methods, urine Gram stain has a moderate predictive value for detecting gram-negative bacteria in urine culture but does not significantly improve urinary tract ...

The multicenter, open-label, noninferiority, randomized trial, Gram Stain-Guided Antibiotics Choice for VAP (GRACE-VAP), was conducted for 2 years in intensive care units (ICUs) of a dozen ...

Gram-positive bacteria, such as Staphylococcus, appear blue or purple under a microscope when scientists apply a stain. Conversely, Gram-negative bacteria do not hold the dye well. Gram-negative ...

The Gram stain is part of a family of histochemical special stains that many laboratories around the world still run manually today. In automating the stain, Ventana gives its customers an ...

THE direct observation of the site of Gram stain in cells of micro-organisms could not be attempted before the ultra-thin section technique became available. However, to obtain a suitable section ...

Pathogenic bacteria were estimated based on the results of the Gram stain (Gram positive or Gram negative) and on morphology. Sputum cultures were also immediately processed on blood agar ...

What can? Gram's stain experiment pointed toward some sort of difference in the structures of various bacterial cells. However, it was not until the early 1950s that scientists started to ...

These “gram-positive” bacterial cells retain the colour of a stain – usually a complex of crystal violet and iodine, or methylene blue – and appear purple or brown under the microscope.

Before that he worked as a resident physician in the city's municipal hospital. In 1884, he developed 'Gram stain' - a method for distinguishing between two major classes of bacteria, in the ...