Gram staining, first developed in 1884 by Hans Christian Gram, remains a foundation of microbiology for separating bacteria into Gram-positive and Gram-negative groups. This simple yet powerful test ...

Gram staining remains one of microbiology’s most essential techniques, offering rapid differentiation between Gram-positive and Gram-negative bacteria. By exploiting differences in cell wall structure ...

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, ...