title: C7 deficiency, abnormal platelet aggregation, and rheumatoid arthritis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000097:blood / Q000235:genetics / Q000276:immunology*; D003184:Complement C7 / Q000172:deficiency*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010974:Platelet Aggregation
chemical_list: D003184:Complement C7