human dev

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Nick H


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April 11, 2015








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It is so common because it allows visualization of the fetus without the hazards of x-ray. Ultrasound works through the use of sound waves. Sound waves are bounced off internal structures and can be viewed with a TV-like viewing screen. The second most common test is maternal blood screening. This test is used to determine whether an amniocentesis is needed...
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This test is used to determine whether an amniocentesis is needed. During an amniocentesis amniotic fluid that surrounds a fetus is extracted and examined. Because amniotic fluid contains fetal cells, chemicals, and microorganisms it provides a wide range of information- genetic makeup, present condition, and the level of maturity of the growing baby...
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