Incubation with externally applied 11-cis retinal induces a marked increase of visual sensitivity within partially bleached skate photoreceptors. This activity of 11-cis retinal is duplicated by 9-cis retinal, but not by all-trans retinal. The sensitization of photoreceptors promoted by 11-cis and 9-cis retinal is accompanied by the formation of rhodopsin and isorhodopsin, respectively.
No takes yet. Share an insight, caveat, or question.
Pepperberg et al. (1976) studied this question.
Synapse has enriched 3 closely related papers on similar clinical questions. Consider them for comparative context: