porphyropsin

1. The dark current and responses to dim flashes were recorded with the suction pipette technique from single rods in pieces of… Expand

The visual pigment from the juvenile lemon shark has been extracted and is a homogeneous vitamin A2-based porphyropsin with… Expand

Winter crayfish (Procambarus clarkii) contain both retinal and 3-dehydroretinal, as first described by Suzuki, Makino-Tasaka and… Expand

The effects of light, temperature, and thyroxine on the proportions of two visual pigments (rhodopsin and porphyropsin) are… Expand

Though it had been supposed earlier that the bullfrog undergoes a virtually complete metamorphosis of visual systems from vitamin… Expand

Abstract The freshwater fish Scardinius erythrophthalmus L. has a mixture of rhodopsin and porphyropsin in its retina. In the… Expand

Abstract The freshwater fish Scardinius erythrophthalmus L. has a mixture of rhodopsin ( λ max 507 nm ) and porphyropsin ( λ max… Expand

Abstract The difference spectra of porphyropsins bleached at various pH as well as in the presence of hydroxylamine and sodium… Expand

The life cycle of the sea lamprey, Petromyzon marinus, includes two metamorphoses. At the end of a period spent as a blind larva… Expand

1. In the rods of fresh-water and some anadromous fishes, rhodopsin is replaced by the purple photolabile pigment porphyropsin… Expand