| antagonism | An interaction between chemicals in which one partially or completelyinhibits the effect of the other (for example, a drug that blocks a hormone's receptor site would be a hormone antagonist). (09 Oct 1997) |
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| antagonist | <pharmacology> A substance that tends to nullify the action of another, as a drug that binds to a cell receptor without eliciting a biological response. Origin: Gr. Antagonistes = an opponent (18 Nov 1997) |
| antagonistic effect | This is the consequence of one chemical (or group of chemicals) counteracting the effects of another chemical, the opposing chemicals cancel out each other's effects. (09 Oct 1997) |
| antagonistic muscles | Those having an opposite function, the contraction of one having the potential, in theory, to "neutralise" that of the other. (05 Mar 2000) |
| antagonistic reflexes | Reflex's which do not act toward a common purpose, and cannot together traverse the final common path. (05 Mar 2000) |