Human color vision depends on three types of cone cells in the retina. Although all three contain the same light-absorbing molecule, 11-cis-retinal, differences in the surrounding protein determine sensitivity to red, green or blue light. Understanding how these subtle protein differences produ...
Source: [Phys.org](https://phys.org/news/2026-07-3d-views-primate-cone-pigments.html)