JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY JAMES KING-HOLMES / SCIENCE PHOTO LIBRARY
IVF embryo transfer. Technician aspirates embryos after in vitro fertilisation (IVF) by CISS (Computer Imaging Sperm Selection). She is drawing up the embryos in liquid into a syringe, before they are implanted into a woman's womb. CISS is a method of obtaining fertilised human embryos. In CISS, a computer monitors the movement of donor sperm to determine sperm fertility. Once computer selected, the fertile sperm is placed on the surface of a human egg for fertilisation to take place. The CISS technique improves the rate and safety of in vitro fertilisation; in 1994 the first CISS baby was born. Photographed at NURTURE reproductive unit in Nottingham, UK.
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