Granulo-fibrillar and globular substructure in unit membranes.
D000818:Animals; D001001:Anura; D002462:Cell Membrane; D008854:Microscopy, Electron; D008974:Mollusca; D010786:Photoreceptor Cells / Q000166:cytology*; D014465:Ultrasonics; D014961:X-Ray Diffraction