2000e-875 aggregation blood-vessels bloodplatelets bloodvessels celladhesionmolecules cellular congresses diabeticretinopathy etiology inflammation inflammationmediators leucocytes leukocytes mediators pathology pathophysiology physiology physiopathology plateletadhesiveness qu55v3311999 thrombosis vascular vascularendothelium wh300r478b1985