Symposium on cholera.
D000942:Antigens, Bacterial / Q000302:isolation & purification; D002771:Cholera / Q000276:immunology*; D002772:Cholera Toxin / Q000276:immunology / Q000302:isolation & purification; D006801:Humans
D000942:Antigens, Bacterial; D002772:Cholera Toxin