Investigation of the specificity of substances in some human sera which are inhibitory in certain viral and rickettsial complement-fixing antigen-antibody systems.
D003165:Complement System Proteins; D006801:Humans; D010084:Oxidation-Reduction; D012282:Rickettsia Infections / Q000276:immunology*; D014777:Virus Diseases / Q000276:immunology*
D003165:Complement System Proteins
COMPLEMENT; RICKETTSIAL DISEASES/immunology; VIRUS DISEASES/immunology