When does the breast begin to develop in utero?Where does the primitive milk streak
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develop
By the 5th week gestation the milk streak becomes what?
Thickening and inward growth into the chest wall continues during what weeks gestation?
Between weeks 12 and 16 gestation specialized cells differentiate into what?
What forms the mammary pit?
What creates an inverted nipple?
What is witches milk?
At what age do
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