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One thing I forgot to mention is that despite the high numbers of unwanted pregnancies that happen worldwide it's still a miracle every time a woman gets pregnant because a sperm cell has to overcome the woman's immune system to reach the egg. And once the egg is fertilized, the resulting embryo (and subsequently fetus) has to resist the mother's immune system because half of its DNA is foreign and it should normally be attacked by the immune cells.
Frankly, when you look at it from a cellular and immunological perspective, it's a wonder a woman ever gets pregnant at all.
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Doncalypso... the one and only Haitian Sensation
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