Threshold for the elasmobranch tapetal-pigment response.
D000221:Adaptation, Ocular; D000818:Animals; D002829:Choroid / Q000502:physiology*; D003623:Dark Adaptation; D008027:Light; D010860:Pigments, Biological / Q000502:physiology*; D012754:Sharks; D014787:Vision Tests
D010860:Pigments, Biological