By F. Hammersen (auth.), Professor Dr. med. Sven Effert, Priv.-Doz. Dr. med. Johannes Dietrich Meyer-Erkelenz (eds.)
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Make it more resistance shear rates is combined There has been some question with regard to the air-fibrinogen layer interface. We found no difference in T values if the air was replaced by oil to cover the protein system (2). Preshearing at 1000 sec- 1 for 3 min increased the T values for human, bovine, cat, dog, rabbit, and sheep fibrinogens. No T values were found with highly purified S lipoprotein, either without or with preshearing (1000 sec-1 for 3 min) . '"E " '"'" :; '"'"c: >. J is o 106 ::;: (J) (J) 3 105L-____- L______L-____- L____~______~ 10- 5 RATE OF SHEAR sec-I (maximum in cycle) Fig.
Adhesion of blood platelets to subendothelial surface: distinct from adhesion to collagen. Experientia 27,283 (1971). : Adhesion of platelets to subendotheliurn. Ann. Y. Acad. Sci. 201, 22 (1972). : The role of blood flow in platelet adhesion, fibrin deposition and formation of mural thrombi. Microvascular Research 5, 167 (1973). : The subendothelium surface and thrombosis. In: "Thrombosis: Pathogenesis and Clinical Trials" (E. ), pp. 91-105. Stuttgart, New York: Schattauer, 1974. : Platelet adhesion, release, and aggregation in flowing blood: effects of surface properties and platelet function.
Ie usually find enhanced spontaneous platelet aggregation. Variations of the time lag between blood sampling and performance of the tests can explain the divergent outcome of platelet function tests in identical patient groups. Time-dependent changes of the aggregability of platelets in PRP which we observed in all aggregation tests have not been considered so far. 5. What is the Cause of the Time-Dependent Changes of Platelet Aggregabili tV? If blood is fixed immediately at venepuncture the majority of platelets are disc-shaped without protrusions, which is the native shape of thrombocytes.
Blood Vessels: Problems Arising at the Borders of Natural and Artificial Blood Vessels by F. Hammersen (auth.), Professor Dr. med. Sven Effert, Priv.-Doz. Dr. med. Johannes Dietrich Meyer-Erkelenz (eds.)