在一种松鼠猴中，雄松鼠猴缺少一种叫做L视蛋白视觉色素。
In one type of squirrel monkey, the males lack a visual pigment called L-opsin.
因此科学家们就考虑：如果给雄性猴子们注入这种雌性猴子拥有的视觉色素会发生什么呢？
So the scientists got to wondering: what would happen if they gave a boy squirrel monkey the same opsin that girls have.
这种物质与视网膜中的色素相关，使人的视觉感受更少的强光。
Proteorhodopsin is related to the pigment in the retina that enables human vision in less intense light.
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