TY - JOUR T1 - The HLA System JF - Annals of the Rheumatic Diseases JO - Ann Rheum Dis SP - 581 LP - 581 DO - 10.1136/ard.38.6.581-a VL - 38 IS - 6 AU - G. D. Pegrum Y1 - 1979/12/01 UR - http://ard.bmj.com/content/38/6/581.1.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -