Gram versus gram.
Stachowski
Edward
E
D005840:Gentian Violet; D006090:Gram-Negative Bacteria; D006801:Humans; D010619:Phenazines; D013194:Staining and Labeling; D009626:Terminology as Topic
C035863:Gram's stain; D010619:Phenazines; D005840:Gentian Violet