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Platelet adhesion to collagen for baseline and 4 consecutive hourly samples from the CentriMag bloop pump-assisted circulation loop. A) Typical fluorescent images of platelet adhesion to collagen of the baseline and two hourly samples collected at two and four hours after the pump-assisted circulation (magnification, X400); B) The quantitative comparison of the area coverage of adherent platelets on collagen (n=7, *P<0.05 for baseline vs post-circulation).
