CD99 GI:171543879 CD99 antigen isoform b precursor 1 margaalall lfgllgvlva apdggfdlsd alpgddfdlg davvdgendd 50 51 prppnppkpm pnpnpnhpss sgsfsdadla dgvsggegkg gsdgggshrk 100 101 egeeadapgv ipgivgavvv avagaissfi ayqkkklcfk enaeqgevdm 150 151 eshrnanaep avqrtllek