[Ultrastructure of the cones and rods in the retina of Xenopus laevis].
D000818:Animals; D006652:Histological Techniques; D012160:Retina / Q000033:anatomy & histology*; D017949:Retinal Cone Photoreceptor Cells; D017948:Retinal Rod Photoreceptor Cells; D014982:Xenopus laevis
RETINA/anatomy and histology