CD74 GI:68448537 CD74 antigen isoform c 1 mhrrrsrscr edqkpvmddq rdlisnneql pmlgrrpgap eskcsrgaly 50 51 tgfsilvtll lagqattayf lyqqqgrldk ltvtsqnlql enlrmklpkp 100 101 pkpvskmrma tpllmqalpm galpqgpmqn atkygnmted hvmhllqshw 150 151 nwrtrllgwv