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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Thromboxane A2 is secreted by which of the following cells?
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The correct answer is  Thromboxane A2 is synthesized by platelets and promotes vasoconstriction and platelet aggregation. Prostacyclin is produced by endothelial and smooth muscle cells in the walls of blood vessels and inhibit platelet aggregation while promoting vasodilation.