luteolysin

Any agent, natural or compounded, that destroys the function of the corpus luteum. [L. luteus, saffron-yellow, + G. lysis, dissolution]

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lu·teo·ly·sin .lü-tē-ō-'līs-ən n a substance that is the postulated causative agent of luteolysis and may be a prostaglandin

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lu·te·ol·y·sin (loo″te-olґə-sin) [luteo- + lysin] a substance that causes degeneration of the corpus luteum.