A choroid tapetum lucidum that is made of a palisade of cells containing stacks of flat hexagonal crystals of guanine [ http://en.wikipedia.org/wiki/Tapetum_lucidum#Classification https://orcid.org/0000-0002-6601-2165 http://www.ncbi.nlm.nih.gov/pubmed/14738502 ]

This is just here as a test because I lose it

Term information



present in taxon



taxon notes

A choroidal tapetum of reflecting cells lying immediately outside the choriocapillaris is formed in a few primitive teleosts.

elasmobranchii (skates, rays, and sharks) and chimaeras

The elasmobranch tapetum in Squalus and Scyliorhinus con- sists of sheets of 12-13 superposed guanine crystals in the choroid.

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