但是黑皮肤科学家的情况很糟。

Black scientists, however, do badly.

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据美国皮肤科学院的统计，美国有3千万女性有遗传性脱发，而男性的统计数字为5千万。

According tothe American Academy of Dermatology, 30 million women in this countryhave hereditary hair loss, compared with 50 million men.

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美国皮肤科学会对这个分析报告指出批评，因为数据是来源于在老鼠身上做的研究，并不清楚是否适用于人。

The American Academy of Dermatology criticized the analysis because the data was from research conducted on mice, and it’s unclear if it’s applicable to humans.

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Here is a thin membrane, it's a polymer scaffold, and on that polymer scaffold scientists have placed some skin cells and they've allowed it to grow.

这是一张薄膜,它是一个聚合物支架,在这个支架上,科学家放了一些皮肤细胞,并让它们生长

耶鲁公开课 - 生物医学工程探索课程节选