Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the gram-staining method of bacterial differentiation.
Salmonella is a Gram-negative, rod-shaped, motile bacilli which move with the use of its peritrichous flagella. The genus Salmonella can be divided into two species (S. enterica and S. bongori), based on their phenotypic profile. […]
Gram staining is initially established by the physician Hans Christian Gram, which was from Denmark. He help to distinguish Klebsiella pneumonia to pneumococci.