TY - GEN AU - MacGregor,A J AU - Ollier,W E AU - Venkovsky,J AU - Mageed,R A AU - Carthy,D AU - Silman,A J TI - Rheumatoid factor isotypes in monozygotic and dizygotic twins discordant for rheumatoid arthritis SN - 0315-162X PY - 1996///1209 KW - Adult KW - Aged KW - Arthritis, Rheumatoid KW - blood KW - Diseases in Twins KW - diagnosis KW - Female KW - HLA Antigens KW - analysis KW - Humans KW - Immunoglobulin A KW - Immunoglobulin G KW - Immunoglobulin Isotypes KW - Immunoglobulin M KW - Male KW - Middle Aged KW - Rheumatoid Factor KW - Serologic Tests KW - Sex Factors KW - Twins, Dizygotic KW - genetics KW - Twins, Monozygotic N1 - Publication Type: Comparative Study; Journal Article; Twin Study ER -