Rheumatoid arthritis; the Pneumococcus antibodies.
D000907:Antibodies, Bacterial; D001168:Arthritis; D001172:Arthritis, Rheumatoid / Q000175:diagnosis*; D006801:Humans; D013296:Streptococcus pneumoniae
D000907:Antibodies, Bacterial
ARTHRITIS, RHEUMATOID/diagnosis