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Miscarriage

Miscarriage is the loss of pregnancy occurring before 20 weeks gestation. Most miscarriages occur during the first 12 weeks of pregnancy. Approximately 15% of all diagnosed pregnancies end in miscarriage. As many as 50% of all pregnancies may end in miscarriage, as most losses occur very early after fertilization, before a woman realizes she is pregnant.

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National Toxicology Program (NTP), within the U.S. Department of Health and Human Services, is an interagency program headquartered at the National Institutes of Health's National Institute of Environmental Health Sciences (NIEHS) located in Research Triangle Park, NC.
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