Non-obstructive azoospermia is diagnosed in cases where no sperm cells can be found in the ejaculate, yet no evidence of a blockage can be seen.

The human genome, our DNA, is made up of 23 pairs of identical chromosomes. While all of these chromosomes are present in every cell of

ان كروموسوم Y  يتم نقله الى الجيل التالي من خلايا الحيوانات المنوية. فهو يحمل الجينات التي تتحكم في نمو الخصية وإنتاج الحيوانات المنوية. عند تكوين

Kallman Syndrome (KS) is a condition normally marked by small testes together with no spontaneous puberty, as well as problems with the sense of smell.

In the male reproductive system, the vas deferens act as a canal transports the sperm towards the penis during ejaculation.  Congenital Bilateral Absence of the

The genetic material which determines human characteristics, such as eye color, height, etc, is carried in sets of what are known as chromosomes.  Normally, humans