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The Endowment for Human Development
The Endowment for Human Development
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Eyes Produce Tears


6 months, 3 weeks

From The Biology of Prenatal Development.Buy Now

Script: 到26週， 眼睛生產眼淚。

在27週，瞳孔對光作出反應。 這種反應在一生中 控制到達 視網膜的光量。

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
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