>21au_B mol:protein length:107 BD70-4003 light chainDIQMTQSPSSQSASIGDTVTITCRASDNINNFLNWYQQKPGKAPKLMIYFASHLQTGVPSRFSGSGSGTDFTLTISSLQPEDLATYYCQQSFRTPSTFGQGTKIEIK