title: Magnetic orientation of purple membranes demonstrated by optical measurements and neutron scattering.
mesh_terms: D001436:Bacteriorhodopsins; D002338:Carotenoids; D006217:Halobacterium / Q000648:ultrastructure*; D008280:Magnetics; D009502:Neutrons; D009904:Optical Rotation; D011487:Protein Conformation; D012542:Scattering, Radiation; D014961:X-Ray Diffraction
chemical_list: D002338:Carotenoids; D001436:Bacteriorhodopsins