mcd99In the case of mCD99, two adjacent O- glycosylation sites, Thr-45 and Thr-50 (NMKPT 45 PKAPT 50 PKKPS) are relevant for PILR ␣ recognition (13). Sequence alnment of humanstudy mht be useful for further studies of mCD99 function. Materials and Methods Cloning of expression vectors The previously cloned mCD99 (Park et al., 2005) was subcloned into