title: On the photoreceptor pigment for phototropism and phototaxis: is a carotenoid the most likely candidate?
mesh_terms: D002338:Carotenoids / Q000528:radiation effects*; D008027:Light; D010786:Photoreceptor Cells / Q000528:radiation effects*; D010944:Plants / Q000528:radiation effects*; D011830:Radiation Effects; D013057:Spectrum Analysis
chemical_list: D002338:Carotenoids