title: Pigment granule movement in Limulus photoreceptors.
mesh_terms: D000818:Animals; D003386:Brachyura / Q000033:anatomy & histology*; D002465:Cell Movement; D003078:Colchicine / Q000494:pharmacology; D003624:Darkness; D008027:Light; D008854:Microscopy, Electron; D008858:Microscopy, Phase-Contrast; D008870:Microtubules / Q000187:drug effects; D010786:Photoreceptor Cells / Q000166:cytology* / Q000187:drug effects; D010860:Pigments, Biological; D012168:Retinal Pigments
chemical_list: D010860:Pigments, Biological; D012168:Retinal Pigments; D003078:Colchicine