P-Selectin glycoprotein ligand 1 (PSGL1) is expressed on platelets and can mediate platelet endothelial interactions in vivo - Frenette, PS; Denis, CV; Weiss, L; Jurk, K; Subbarao, S; Kehrel, B; Hartwig, JH; Vestweber, D; Wagner, DD (J Exp Med, 2000)