ALLORECOGNITION OF HLA-DR AND HLA-DQ TRANSFECTANTS BY HUMAN CD45RA AND CD45R0 CD4 T-CELLS - REPERTOIRE ANALYSIS AND ACTIVATION REQUIREMENTS - MERKENSCHLAGER,M; IKEDA,H; WILKINSON,D; BEVERLEY,PCL; TROWSDALE,J; FISHER,AG; ALTMANN,DM (EUROPEAN JOURNAL OF IMMUNOLOGY, 1991)