>9b7b_B mol:protein length:226 Hemagglutinin HA1 chain, HLA class II histocompatibility antigen DR beta chainGAPKYVKQNTLKLATSGGSGSIEGRGSGDTRPRFLEQVKHECHFFNGTERVRFLDRYFYHQEEYVRFDSDVGEYRAVTELGRPDAEYWNSQKDLLEQKRAAVDTYCRHNYGVGESFTVQRRVYPEVTVYPAKTQPLQHHNLLVCSVNGFYPGSIEVRWFRNGQEEKTGVVSTGLIQNGDWTFQTLVMLETVPRSGEVYTCQVEHPSLTSPLTVEWRATGGENLYFQ