Further observations on the visual pigments of the clawed toad, Xenopus laevis.
D000818:Animals; D001001:Anura; D010860:Pigments, Biological / Q000032:analysis*; D011898:Ranidae; D012160:Retina / Q000502:physiology*; D012168:Retinal Pigments; D014982:Xenopus laevis
D010860:Pigments, Biological; D012168:Retinal Pigments
FROGS AND TOADS; PIGMENTS/determination; RETINA/physiology