| actomyosin | <chemical> A protein complex of actin and myosin occurring in muscle. It is the essential contractile substance of muscle. Chemical name: Actomyosins (12 Dec 1998) |
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| platelet actomyosin | The contractile protein of platelets, responsible for clot retraction, platelet aggregation, and release of ADP and other biologic amines essential to platelet function. Synonym: thrombosthenin. (05 Mar 2000) |
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