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.

As culturing methods are time-consuming, a more rapid detection technique is required. This study investigated the sensitivity, specificity, and detection limit of Gram staining of milk precipitates ...

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.

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 ...

Gram staining is one way scientists can identify bacteria. Gram-positive bacteria, such as Staphylococcus, appear blue or purple under a microscope when scientists apply a stain. Conversely ...

The fungi isolated from Kejeik samples were identified as Aspergillus niger, Alternaria, and Penicillium. However, fungi counts in Ijl Kejeik, Nawk Kejeik and Garmut Kejeik were 1.6 × 104, 1.6 × 104 ...

bogdanhoda/Shutterstock.com As you can imagine, it’s challenging to get a handle on all these bacterial species. One tool that helps scientists identify bacteria, first developed nearly 140 years ago, ...