The process requires monitoring and stimulating a woman's ovulatory system, eradicating an ovum or ova (egg or eggs) from her ovaries and letting sperm fertilise them in a lifestyle medium in a laboratory. In vitro fertilisation (IVF) is a course of action of fertilisation where an egg is merged with sperm in vitro ("in glass"). This is applied when sperm has difficulty penetrating the egg. ICSI is also utilised when sperm figures are quite low.