Histological study of choroidal melanocytes in animals with tapetum lucidum cellulosum

@article{Chijiiwa2004HistologicalSO,
  title={Histological study of choroidal melanocytes in animals with tapetum lucidum cellulosum},
  author={Taeko Chijiiwa and Tatsuro Ishibashi and Hajime Inomata},
  journal={Graefe's Archive for Clinical and Experimental Ophthalmology},
  year={2004},
  volume={228},
  pages={161-168}
}
The distribution and morphology of choroidal melanocytes in dogs and cats which have a tapetum were compared with those of humans who do not. In dogs or cats, tapetal cell-like melanocytes were arranged in layers on the scleral side of the tapetum and underneath the choriocapillaris in the non-tapetal area. Although the tapetum of the dog occupied a smaller area than that of the cat, the tapetum plus the area of tapetal cell-like multilayered melanocytes occupied most of the fundus in the dog… 
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ABSENCE OR PRESENCE OF TAPETUM LUCIDUM: MACRO AND MICROSCOPIC INVESTIGATIONS IN DONKEY (EQUUS ASINUS), CAT (FELIS DOMESTICA) AND ONE-HUMPED CAMEL (CAMELUS DROMEDARIUS)
TLDR
In donkey, the thickness of the tapetal tissue and the degree of pigmentation in the retinal epithelium differed according to the region of Tapetum, which created the greater reflectance of light.

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