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, ...

Facklamia species are Gram-positive, facultatively anaerobic bacteria that present a challenge for clinical labs to identify. It's α-hemolytic, catalase negative and is often misidentified as ...

Gram-positive bacteria have thick cell walls. A Gram stain test, which involves a chemical dye, stains the bacterium’s cell wall purple. On the other hand, gram-negative bacteria stain pink instead.

A University at Buffalo study using a sample of postmenopausal women is the first to examine the association between diet quality and the oral microbiome. A new study by researchers at George ...