而其他羽毛化石(尽管缺乏碳元素)中找到的痕迹，也许能显示已经因氧化而消失的黑色素体的原始存在。

But trace imprints found in other fossilised feathers (despite an absence of carbon) may indicate the original presence of melanosomes that have since been lost to oxidation.

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这种被称作玻璃蛙的小东西有一个透明的身体，因为缺乏色素，它活动的器官都能看到，包括那颗跳动的心脏。

This so-called glass frog's transparent body lacks pigmentation and reveals its organs in action—including a beating heart.

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它的黑色素细胞与形态都是正常的，只是先天性酷氨酸酶尖性减少或缺乏，致使不能产生黑色素所引起的。

Melanoma cells and its patterns are normal, but congenital enzyme tyrosine sharp reduction or lack of, with the result that should not have caused melanoma.

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