title: Exciton interactions and chromophore orientation in the purple membrane.
mesh_terms: D001436:Bacteriorhodopsins; D002462:Cell Membrane; D002942:Circular Dichroism; D006217:Halobacterium / Q000166:cytology*; D008027:Light; D008956:Models, Chemical; D009949:Orientation; D010860:Pigments, Biological; D013053:Spectrophotometry
chemical_list: D010860:Pigments, Biological; D001436:Bacteriorhodopsins