3 h 28 m, 25 nov 2002 año - Second Trimester Begins
Descripción:
Week 13 marks the beginning of the second trimester. When the second trimester begins the placenta is already fully developed. During this trimester the placenta grows to suit the growing fetus.Añadido al timeline:
fecha:
3 h 28 m, 25 nov 2002 año
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~ 22 years ago