1) Biological pigment
Found on
https://www.crosswordclues.com/clue/ommochrome
Ommochrome (or visual pigment) refers to several biological pigments that occur in the eyes of crustaceans and insects. The eye color is determined by the ommochromes. Ommochromes are also found in the chromatophores of cephalopods, and in spiders. Ommochromes are metabolites of tryptophan, via kynurenine and 3-hydroxykynurenine. They are responsi...
Found on
http://en.wikipedia.org/wiki/Ommochrome
any of a group of biological pigments (biochromes) conspicuous in the eyes of insects and crustaceans as well as in the changeable chromatophores ... [1 related articles]
Found on
http://www.britannica.com/eb/a-z/o/17
No exact match found.
