Host parasite relationships in gram-negative infections. Introduction.
D000818:Animals; D002771:Cholera / Q000266:history; D004926:Escherichia coli / Q000145:classification; D005858:Germany; D049672:History, 19th Century; D006801:Humans; D009169:Mycobacterium tuberculosis; D014397:Tuberculosis, Pulmonary / Q000266:history*