Christopher Polge
Encyclopedia
Ernest John Christopher Polge CBE
Order of the British Empire
The Most Excellent Order of the British Empire is an order of chivalry established on 4 June 1917 by George V of the United Kingdom. The Order comprises five classes in civil and military divisions...

, FRS (16 August 1926– 17 August 2006) was an English biologist, most noted for his work in cryopreservation
Cryopreservation
Cryopreservation is a process where cells or whole tissues are preserved by cooling to low sub-zero temperatures, such as 77 K or −196 °C . At these low temperatures, any biological activity, including the biochemical reactions that would lead to cell death, is effectively stopped...

.

The son of a Buckinghamshire farmer, he was educated at Bootham School
Bootham School
Bootham School is an independent Quaker boarding school in the city of York in North Yorkshire, England. It was founded by the Religious Society of Friends in 1823. It is close to York Minster. The current headmaster is Jonathan Taylor. The school's motto Membra Sumus Corporis Magni means "We...

 in York, before going to the University of Reading
University of Reading
The University of Reading is a university in the English town of Reading, Berkshire. The University was established in 1892 as University College, Reading and received its Royal Charter in 1926. It is based on several campuses in, and around, the town of Reading.The University has a long tradition...

 where he studied Agriculture. He worked briefly as an agricultural economist before joining the Division of Experimental Biology at the National Institute for Medical Research at Mill Hill, London, and later the Animal Research Station at Cambridge, where he worked under Sir John Hammond

It was while a doctoral student that he solved the long-standing problem of how to preserve living cells and tissues at very low temperatures. In 1950, Polge produced the first chicks from eggs fertilised with frozen sperm, the first vertebrates to be produced in this way. Two years later, Polge reported high pregnancy rates in cattle using sperm that had been frozen for periods in excess of a year, work which had far-reaching consequences for the future of artificial insemination and genetic improvement in livestock.

After the Animal Research Station closed in 1986, Polge co-founded Animal Biotechnology Cambridge Ltd., where he was also Scientific Director, to translate basic and applied research into commercial agricultural processes and products. He was also a Fellow of Wolfson College from 1984 to 1993 (Emeritus Fellow after)

Polge was elected to the Royal Society in 1983, won the 1988 Wolf Foundation Prize in Agriculture, and was made a Commander of the Order of the British Empire in 1992. He was elected to the US National Academy of Sciences as a foreign associate in 1997.
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