Page "Fellatio" Paragraph 26
from
Wikipedia
The results were statistically significant and are consistent with the fact that semen contains several agents that have important roles in the prevention of pre-eclampsia, which may arise out of an immunological condition.
According to that view, preeclampsia is caused by a failure of the mother to accept the fetus and placenta, which both contain " foreign " proteins from the father's genes.
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