Further parameters of thrombus morphology. Image analysis of objects (single platelets or thrombi) deposited on different peptide substrates at various shear rates yielded simple morphologic parameters, which quantitate the complexity of platelet adhesion and thrombus formation after 5 minutes of DiOC₆-labeled whole blood flow at different shear rates. (A) Number of objects detected (N). (B) Mean width (μm). Shear rates: indicates 100s⁻¹; , 300s⁻¹; , 1000s⁻¹; and ▭, 3000s⁻¹.