>2nna_B mol:protein length:207 MHC class II antigen GGGGSIEGRGSGGGSRDSPEDFVYQFKGMCYFTNGTERVRLVTRYIYNREEYARFDSDV GVYRAVTPLGPPAAEYWNSQKEVLERTRAELDTVCRHNYQLELRTTLQRRVEPTVTISP SRTEALNHHNLLVCSVTDFYPAQIKVRWFRNDQEETTGVVSTPLIRNGDWTFQILVMLE MTPQRGDVYTCHVEHPSLQNPIIVEWRAQS