A Woman’s Reproductive Tract Can Weed Out Unwanted Sperm
cnn.com
cnn.com
Actual points from the actual article:
> A sperm's swimming motion, speed and viability are affected by the level of genetic compatibility between a female's cervical mucus and the male's sperm, found a new study that published Wednesday in the Proceedings of the Royal Society B journal.
> A prior study by the same authors found the same thing occurred in a woman's follicular fluid.
> Think of it as a chemical "sorting hat" -- dictated by a female's reproductive secretions -- that help sperm who are most likely to give her offspring a genetic boost in survival.