Videomicrographs of TSP-enhanced adhesion of SS RBC in the ex vivo mesocecum venules. (A) Adhesion (small arrow) was confined to venules and (B) was characterized by frequent cluster formation of adherent SS RBC (small arrows) in the affected venules. The large arrow in each case indicates flow direction. Bar in A = 50 μm and bar in B = 20 μm.