Summary
Cell-cell interactions mediating leukocyte trafficking, thrombogene-sis and inflammation
are crucial for the host defense mechanism. The selectin family of integral membrane
proteins includes E-selectin, L-selectin and P-selectin. Selectins mediate tethering
and rolling of leukocytes to the vessel wall at the site of inflammation. The counter-receptor
for P-selectin and possibly the other selectins is P-selectin glycoprotein ligand-1
(PSGL-1). This review focuses on the properties and biology of PSGL-1.