British nurse and embryologist Jean Purdy (1945 - 1985) and physiologist Robert Edwards in their research laboratory in Cambridge, 28th February 1968. Purdy is handing Edwards a dish taken from an incubator, containing human egg cells, which have been fertilized outside the body. Purdy, Edwards and obstetrician Patrick Steptoe worked together to develop the techniques of in-vitro fertilisation (IVF), with the first test-tube baby, being born nine years later in 1978. (Photo by Central Press/Hulton Archive/Getty Images)
