lutein

A yellow-orange xanthophyll carotenoid, C₄₀H₅₆O₂, that occurs naturally in green plants and in the fat of plant-eating animals, egg yolk, the corpus luteum, and the retina, and that is being investigated as a treatment for macular degeneration.

A dried preparation of corpus luteum.

A yellow pigment contained in the yolk of eggs, in the tissue of the corpus luteum, in blood-serum, etc. It forms orange crystals.

A substance of a strongly marked yellow color, extracted from the yolk of eggs, and from the tissue of the corpus luteum.

A yellow carotenoid pigment, widely distributed in both plants and animals.

yellow carotenoid pigments in plants and animal fats and egg yolks