retinal, retinene

retinal, retinene

or

retinaldehyde

an aldehyde of RETINOL and the main carotenoid pigment found in the RETINA of the eye. It is usually combined with OPSIN to form RHODOPSIN.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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