In one type of squirrel monkey, the males lack a visual pigment called L-opsin.
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。
He discovered that each species has completely lost at least one of the seven opsin genes, and some have even lost two.
他发现每个物种至少已经丧失了七视蛋白基因的一种，有的甚至失去了两种。
Vitamin A is to create visual cells in order to feel weak light of the composition of rhodopsin, rhodopsin from opsin and 11 - cis - retinal composition, with the dark vision related.
维生素A是构成视觉细胞中感受弱光的视紫红质的组成成分，视紫红质是由视蛋白和11-顺-视黄醛组成，与暗视觉有关。
Vitamin A is to create visual cells in order to feel weak light of the composition of rhodopsin, rhodopsin from opsin and 11 - cis - retinal composition, with the dark vision related.
维生素A是构成视觉细胞中感受弱光的视紫红质的组成成分，视紫红质是由视蛋白和11-顺-视黄醛组成，与暗视觉有关。
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