- any substance, usually of hypothalamic origin, capable of accelerating the rate of secretion of a given hormone by the anterior pituitary gland;
- factors required in the termination phase of either RNA biosynthesis or protein biosynthesis.
- colloquial shortened form for the HMG-CoA reductase inhibitors used as antihyperlipidemic agents, whose generic names end with the suffix statin.
Synonym(s): termination factor
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Examples: glitazone, GI cocktail, etc.