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Pronunciation: lu'te-in


  1. The yellow pigment in the corpus luteum, in the yolk of eggs, or any lipochrome.
  2. The dried powdered corpora lutea of the hog, formerly used as a progesterone source.

Synonym(s): xanthophyll

[L. luteus, saffron-yellow]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.