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The Endowment for Human Development
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Response to Light


6 months, 2 weeks

From The Biology of Prenatal Development.Buy Now

Script: در هفته 26 چشم ھا اشک تولید می کنند.

حدقه ھا از هفته 27 به نور واکنش نشان می دهند. این پاسخ مقدار نوری که در طول حیات به شبکیه چشم می رسد را تنظیم می کند

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