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How Big Is Baby?

From poppyseed to papaya, find out how big baby is at every stage during your pregnancy.

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Your Baby: Week 19

Vernix caseosa, a greasy white substance made of lanugo, oil and dead skin cells (yum) now coats baby's skin, shielding it from the amniotic fluid. (Picture yourself after a nine-month bath, and the need for protection makes sense.) You might actually get to see the vernix at birth, especially if baby is premature.

> Read more about baby this week

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