skylalopez99 skylalopez99
  • 22-10-2021
  • Biology
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State two reasons why the fetal blood must not mix with the maternal blood?

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Breeze48
Breeze48 Breeze48
  • 22-10-2021

Answer:During pregnancy, red blood cells from the unborn baby can cross into the mother's blood through the placenta. If the mother is Rh-negative, her immune system treats Rh-positive fetal cells as if they were a foreign substance. The mother's body makes antibodies against the fetal blood cells

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