title: A microspectrophotometric study of normal and artificial visual pigments in the photoreceptors of Xenopus laevis.
mesh_terms: D000818:Animals; D007814:Larva / Q000378:metabolism; D010786:Photoreceptor Cells / Q000378:metabolism*; D012168:Retinal Pigments / Q000378:metabolism*; D013053:Spectrophotometry; D014801:Vitamin A / Q000031:analogs & derivatives / Q000378:metabolism; D014802:Vitamin A Deficiency / Q000378:metabolism; D014982:Xenopus laevis / Q000378:metabolism*
chemical_list: D012168:Retinal Pigments; C024366:vitamin A2; D014801:Vitamin A