Platelate aggregation is caused by all, except ?: (A) Thromboxane A2, (B) Serotonin, (C) Prostacyclin (PGI2), (D) Thrombin
Answer is C. Ans. is 'c' i.e., Prostacyclin (PGI2)Factors promoting platelet aggregation : ADP, TXA2 , epinephrine, serotonin, vWF, fibrinogen, collagen, immune complex, thrombin, thrombospondin.Factors inhibiting platelet aggregation : PGI2, NO, endothelin, bradykinin.