Why semen is cleaned of abnormal sperms

Semen in a test-tube set for analysis. [iStockphoto]

In Vitro Fertilization (IVF) is a technology in which an egg (from a woman) is fertilized outside the human body (with sperms from a man), in a lab setting.

"The fertilized egg is then transferred into the womb of the woman where it should implant and develop into a pregnancy," explains Dr Kireki Omanwa, a fertility expert.