title: The structure and morphologic relations of rods and cones in the retina of the spiny dogfish, Squalus.
mesh_terms: D000818:Animals; D008854:Microscopy, Electron; D010786:Photoreceptor Cells / Q000166:cytology*; D012160:Retina / Q000033:anatomy & histology / Q000166:cytology; D012754:Sharks; D013569:Synapses