Purification of human monocytes on gelatin-coated surfaces.

Human peripheral blood monocytes secrete a cell membrane-associated glycoprotein, cold insoluble globulin (fibronectin). Since fibronectin binds to gelatin-coated surface, we developed a simple technique for separation of human peripheral blood monocytes from whole mononuclear cell preparation. These preparations are characterized by a high monocyte purity (more than 90%), low platelet contamination and excellent viability.