(from the article `visual pigment`) Many vertebrate animals have two or more visual pigments. Scotopsin pigments are associated with vision in dim light and, in vertebrates, are found ...
The protein moiety of the pigment in the rods of the retina. ... (05 Mar 2000) ... 
(sko-top´sin) the protein moiety in the retinal rods that combines with 11-cis-retinal to form rhodopsin.
Type: Term Pronunciation: skō-top′sin Definitions: 1. The protein moiety of the pigment in the rods of the retina.