美国科学家将这种胶体用在雌性猴子身上做实验。
Scientists at the United States tested the gel on female monkeys.
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.
化石标本是一只幼年的雌性猴子，化石只有左下肢部分丢失，其他部位保存得非常完整，包括皮毛和身体轮廓依然清晰可见。
Only the left lower limb is missing, and the preservation is so remarkable that impressions of fur and the soft body outline are still clear.
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