Rheumatoid factors in families.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000372:Agglutination Tests; D001172:Arthritis, Rheumatoid / Q000453:epidemiology / Q000235:genetics*; D004739:England; D005260:Female; D005799:Genes, Dominant; D005808:Genes, Recessive; D006801:Humans; D007841:Latex Fixation Tests; D008297:Male; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000032:analysis*
D012217:Rheumatoid Factor