title: Decrease in magnetic anisotropy of external segments of the retinal rods after a total photolysis.
abstract: The magnetic anisotropy of a polymembrane cell, such as the external segment of the frog retinal rod, is defined as the difference between the axial magnetic susceptibility (chiar), chia - chir = deltachi of the segment. After the total photolysis of the rhodopsin in situ, deltachi decreases a significantly by 20%. This decrease in magnetic anisotrophy should involve a subtle molecular disorder, mostly due to an alteration of the rhodopsin molecule.
mesh_terms: D000818:Animals; D001001:Anura; D003623:Dark Adaptation; D066298:In Vitro Techniques; D008280:Magnetics; D010782:Photolysis; D010786:Photoreceptor Cells / Q000502:physiology*; D012168:Retinal Pigments / Q000502:physiology*; D012243:Rhodopsin / Q000502:physiology*
chemical_list: D012168:Retinal Pigments; D012243:Rhodopsin