Judged: two independent readers; copy check clear.
cone opsin
cone opsin Cone opsin is a light-sensitive visual pigment found in cone photoreceptors of the retina.
Cone opsin is a light-sensitive visual pigment found in cone photoreceptors of the retina. In the supplied source, the typical mammalian longwave-sensitive and shortwave-sensitive cone opsins are both present, and some cones contain both types.