early ( beginning 3-4 days ) adhesion of pigment-laden mononuclear cells to endothelium within venous vessels and loss of function of the small capillaries supplying the skeletal muscle fibers and , later ( 6-9 days ) , the apparent attraction of erythrocytes to venular and venous endothelium and to adherent monocytes .
C0005847
vessels
C1179027
venous endothelium