Photocurrents of single retinal rods from Rana pipiens tadpoles.
Outer segment membrane current was recorded from single rod photoreceptors of Taylor-Kollros State III and Stage XXIII tadpoles. Response-intensity relations and kinetics of the photocurrent were similar to those of audit amphibian photoreceptors, suggesting that phototransduction is quantitatively similar in developing rods and adult rods. Maximum response amplitude was about 1/3 that of adult rods, probably because of the shorter length of the outer segment in tadpoles (20 vs 50 micrometers).
D000818:Animals; D004307:Dose-Response Relationship, Radiation; D004553:Electric Conductivity; D066298:In Vitro Techniques; D007814:Larva / Q000502:physiology; D010775:Photic Stimulation; D010786:Photoreceptor Cells / Q000502:physiology*; D011894:Rana pipiens / Q000502:physiology*; D012168:Retinal Pigments / Q000502:physiology; D012374:Rod Cell Outer Segment / Q000502:physiology*; D013053:Spectrophotometry
D012168:Retinal Pigments