[RoosterRedux]

The blood of the child does not mix with the mothers blood. Sometimes the blood of the 2 can actually be toxic to the other.

Very interesting. Do you have a source so that I might read more?

[mware]

The blood of the child does not mix with the mothers blood. Sometimes the blood of the 2 can actually be toxic to the other.

I teach 7th grade biology, and I'll break it down as simple as I can.

When the embryo is in the uterus, he/she get nutrients and oxygen via the umbilical cord and placenta.

The placenta connects the baby to the mother and is where the nutrients and oxygen from the mother are exchanged to the baby and vise versa.

There can be problems if the mother and baby have different RH factors. It may require the new born to receieve a blood tranfusion.

The problem can be avoided in future pragnancies by the mother receiving an injection,