title: Differentiation of 19S and 7S rickettsial antibodies by passive haemagglutination reaction with cysteine.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D002850:Chromatography, Gel; D003545:Cysteine / Q000494:pharmacology*; D004586:Electrophoresis; D006386:Hemagglutination Tests; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis*; D007075:Immunoglobulin M / Q000032:analysis* / Q000037:antagonists & inhibitors; D011817:Rabbits; D012283:Rickettsia prowazekii / Q000276:immunology*; D014438:Typhus, Epidemic Louse-Borne / Q000276:immunology*
chemical_list: D007074:Immunoglobulin G; D007075:Immunoglobulin M; D003545:Cysteine