A serologically-active erythrocyte-sensitizing substance from typhus rickettsiae.  I.  Isolation and titration.
D004912:Erythrocytes; D012281:Rickettsia; D012283:Rickettsia prowazekii; D014438:Typhus, Epidemic Louse-Borne; D014611:Vaccination
ERYTHROCYTES; RICKETTSIA PROWAZEKII