title: Positively and negatively contrasted fibrils and membranes from rod outer segments of the frog retina.
mesh_terms: D000818:Animals; D001001:Anura; D002923:Cilia; D003584:Cytological Techniques; D008854:Microscopy, Electron; D010740:Phospholipases; D010772:Phosphotungstic Acid; D010786:Photoreceptor Cells / Q000166:cytology*; D011402:Pronase; D011893:Rana esculenta; D013194:Staining and Labeling
chemical_list: D010772:Phosphotungstic Acid; D010740:Phospholipases; D011402:Pronase