title: PHOTOTAXIS IN EUGLENA. I. ISOLATION OF THE EYE-SPOT GRANULES AND IDENTIFICATION OF THE EYE-SPOT PIGMENTS.
mesh_terms: D002338:Carotenoids; D002845:Chromatography; D003594:Cytoplasmic Granules; D004583:Electrons; D005055:Euglena; D005123:Eye; D008853:Microscopy; D008854:Microscopy, Electron; D012106:Research; D011984:Sensory Receptor Cells; D013053:Spectrophotometry
chemical_list: D002338:Carotenoids
keywords: CAROTENE; CAROTENOIDS; CHROMATOGRAPHY; EUGLENA; EXPERIMENTAL LAB STUDY; EYE; MICROSCOPY, ELECTRON; RECEPTORS, NEURAL; SPECTROPHOTOMETRY