The testes are where sperm cells are produced and are also responsible for the production of the sex hormone testosterone. The testes, commonly referred to as "balls," are housed in a pouch of ...

Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. These reproductive cells are ...

Next, she identifies a sperm with a mix of abnormalities and warns that agglutination—when sperm cells stick together ... Dr. Lee explained that proper anatomy, such as the head shape ...

In an advance for treating male infertility, researchers transplanted a patient with his own sperm-forming stem cells that ...