MedlinePlus Medical Encyclopedia: Fetus (12 weeks old)

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Fetus (12 weeks old)

A fetus at 12 weeks can make a fist and suck its thumb.

Update Date: 10/19/2007

Updated by: Deirdre O’Reilly, MD, MPH, Neonatologist, Division of Newborn Medicine, Children’s Hospital Boston and Instructor in Pediatrics, Harvard Medical School, Boston, Massachusetts. Review Provided by VeriMed Healthcare Network.

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