spermatozoa

More than 600 crystals of gentlemen are placed in liquid -196 degrees Celsius. This process is done through many stages not everyone knows.

In fact, there have been a number of ways to support solving infertility problems, such as artificial insemination and in vitro fertilization.

Most sperm are malformed, men still have the ability to pillow and give birth if only one testicle, sperm also degenerate with age ... are things you may not know.

Many statistics show that the US is currently the world's No. 1 power in exporting human sperms. It is estimated that there are tens of thousands of containers

German and Israeli researchers said it was possible to create mouse sperm from germ cells, a group of cells in the testicles responsible for sperm production, according to the