26 mayo 2015
Sperm in the first fraction of ejaculate are more numerous, move more and present better quality DNA than those lagging behind. This is the conclusion of a study that confirms that while the objective of the first fraction is to fertilize the egg, the second phase is so that no sperm from any other male has a chance to fertilize it.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/Qzy-CSyJQ7Q/150526085347.htm
