Definitions for "Gram-negative bacteria"
Bacteria which stain pink in the differential stain, called the Gram stain; contain an outer membrane outside of the cell wall.
Bacteria whose cell wall is composed of a thick layer of peptidologlycan covered by an outer membrane of lipoprotein and lipopolysaccharide. In the Gram-staining process these bacteria are decolorized.
Bacteria containing an outer membrane and LPS or LOS. In this course we will discuss the following gram-negative bacteria: Vibrio cholerae, the Bordetellae, Neisseriae, Yersiniae, Salmonellae, Chlamydiae, and Pseudomonas. These bacteria lose the crystal violet color after decolorizing by alcohol; they stain pink after treatment with safranin (Lecture: The Bacterial Cell: Structure, Function, Growth, and Gene Regulation I, 1/24/02)
Keywords:  vre, pca