Classification of bacteria based on the cell wall structure by using Gram staining. Due to their thick walls, Gram-positive bacteria stain blue.

See also Gram-negative

Gram-negative bacteria stain red. Due to their thick cell walls, Gram-positive bacteria stain blue.

Knowledge Database

The A-to-Z database provides information on each pathogen, the most common infections that it triggers, its main transmission paths and recommendations on disinfection. In the glossary, you will find explanations of infection control terms. Search now!

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