Investigations into strongly anticomplementary human sera. V.
D000368:Aged / Q000502:physiology; D000375:Aging; D003141:Communicable Diseases / Q000635:transmission*; D003169:Complement Inactivator Proteins; D018562:Disease Transmission, Infectious
D003169:Complement Inactivator Proteins; C012749:anticomplement
AGED/physiology; COMMUNICABLE DISEASES/transmission