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| Symbol: Pt; atomic weight: 195.09; atomic number: 78 |
| Symbol: Po; atomic weight: 210; atomic number: 84 |
| rhodopsin (rəʊˈdɒpsɪn) | |
| —n | |
| See also iodopsin Also called: visual purple a red pigment in the rods of the retina in vertebrates. It is dissociated by light into retinene, the light energy being converted into nerve signals, and is re-formed in the dark | |
| [C20: from | |
rhodopsin rho·dop·sin (rō-dŏp'sĭn)
n.
A thermolabile protein that is sensitive to red light and is found in the external segments of the rods of the retina of the eye. Also called visual purple.