Wavy lines mean ultrasound waves. During amniocentesis, amniotic fluid is drawn from the uterus.
| By | Healthwise Staff |
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| Primary Medical Reviewer | Sarah Marshall, MD - Family Medicine |
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| Specialist Medical Reviewer | Siobhan M. Dolan, MD, MPH - Reproductive Genetics |
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| Last Revised | April 4, 2012 |
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