Titration of cholera antitoxin levels by passive hemagglutination tests using fresh and formalinized sheep erythrocytes.
D000818:Animals; D000992:Antitoxins / Q000032:analysis*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002771:Cholera; D004912:Erythrocytes; D006386:Hemagglutination Tests; D008722:Methods; D011817:Rabbits; D012756:Sheep
D000992:Antitoxins