A mother will always have a bond with her children like no other person will. Maybe the bond is just there, yet again maybe it can be scientifically explained. Research that has been recently conducted shows that a mother and child exchange cells during pregnancy. This is called microchimerism. It was first discovered in mice, but studies have shown that microchimerism happens in humans as well. During pregnancy, a defense system called the blood-brain barrier is significantly weaker which allows the mother and child to exchange cells. The fetal DNA can hang around in the mother's brain for years. 59 female brains were studied and 37 of them showed signs of fetal DNA in them. This shows that mother and child really do have a bond like no other. Fetal cells can help protect a mother from things such as breast cancer help the process of repairing tissue. That's great, but sadly
these cells can bring harm to the mother as well. Studies show a correlation between the number of pregnancies a woman had in her lifetime and her chance of getting Alzheimer's. Since this is a new discovery, many more tests need to be performed in order to say whether or not this exchanging of cells is safe for both mother and child. As for now though, we know that a bond between mother and child is actually very real. One that could potentially always be in our minds, literally.
Sources:
http://mcc.blackboard.com/webapps/portal/frameset.jsp?tab_tab_group_id=_2_1&url=%2Fwebapps%2Fblackboard%2Fexecute%2Flauncher%3Ftype%3DCourse%26id%3D_5636_1%26url%3D
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