The answer that you are looking for is A. Nephrons
Amniocentesis is a test in which fluid is removed from the uterus so the baby's genetic composition can be determined.
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Is this just a general question? if so, it probably costs more due to the fact that certain codes must be met to build a hospital, it also is more expensive due to the material that has to be used to meet those codes. However, the location of the hospital can greatly affect the pricing ( like the city it resides in and where in that city it is located )
