>tr|G1EN18|G1EN18_HUMAN MHC class II antigen (Fragment) OS=Homo sapiens OX=9606 GN=HLA-DRB1 PE=4 SV=1 RFLEYSTSECHFFNGTERVRFLDRYFYNQEEYARFDSDVGEFRAVTELGRPDEEYWNSQK DILEDERAAVDTYCRHNYGVVESFTVQRR