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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: A 26. hétre a szem könnyezik.

A pupillák már 27 hetes korban reagálnak a fényre. Ez a reflex szabályozza a retinát érő fény mennyiségét az egész élet során.

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