(3) In vitro fertilisation is a process by which an egg is fertilised by sperm outside the body: in vitro (“in glass”). The process involves monitoring and stimulating a woman’s ovulatory process, removing an ovum or ova (egg or eggs)from the woman’s ovaries and letting sperm fertilise them in a liquid in a laboratory. The fertilised egg (zygote) is cultured for 2–6 days in a growth medium and is then transferred to the same or another woman’s uterus, with the intention of establishing a successful pregnancy. The first successful birth of a “test tube baby”, Louise Brown,occurred in 1978.