A new Mayo Clinic study shows that couples using in vitro fertilization have the same likelihood of successful pregnancy whether the sperm used is frozen or fresh. Researchers presented the results ...

During mammalian reproduction, millions of sperm undertake a journey that only one will finish. This journey to fertilization has been commonly viewed as a race: a sea of sperm competing to get to the ...

Why is Male Sperm Quality Important? In the human reproductive process, both men and women play equally significant roles.

Out of about 100 million sperm, only a few hundred make it to the fallopian tubes. A directional movement called rheotaxis, guides sperm cells to swim against the cervical mucus flow to reach the egg ...

For a sperm produced in the testis of a man to fertilize a woman’s egg, the sperm must first mature in a man’s epididymis, a duct that helps to transport and store sperm. However, the exact mechanisms ...