TY - JOUR T1 - Genetic variants of complement component 3 (C3) in DR4 positive and DR4 negative rheumatoid arthritis. JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis SP - 269 LP - 271 DO - 10.1136/ard.45.4.269 VL - 45 IS - 4 AU - W Thomson AU - P A Dyer AU - P A Sanders AU - D M Grennan Y1 - 1986/04/01 UR - http://ard.bmj.com/content/45/4/269.abstract N2 - C3 allotypes were defined in 86 Caucasoid patients with rheumatoid arthritis living in the north west of England and in 80 local, healthy controls. C3 allotype and phenotype frequencies were similar in RA (whether DR4 positive or negative) and control groups. ER -