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The Endowment for Human Development
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Bowel Movements


3 months

From The Biology of Prenatal Development.Buy Now

Script: Bowel movements begin as early as 12 weeks and continue for about 6 weeks.

The material first expelled from the fetal and newborn colon is called meconium. It is composed of digestive enzymes, proteins, and dead cells shed by the digestive tract.

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