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George Davis Snell

George Davis Snell (December 19, 1903 – June 6, 1996) was an American mouse geneticist and basic transplant immunologist.


George Snell shared the 1980 Nobel Prize in Physiology or Medicine with Baruj Benacerraf and Jean Dausset for their discoveries concerning "genetically determined structures on the cell surface that regulate immunological reactions". Snell specifically "discovered the genetic factors that determine the possibilities of transplanting tissue from one individual to another. It was Snell who introduced the concept of H antigens."[1] Snell's work in mice led to the discovery of HLA, the major histocompatibility complex, in humans (and all vertebrates) that is analogous to the H-2 complex in mice. Recognition of these key genes was prerequisite to successful tissue and organ transplantation.


George Snell was born in Bradford, Massachusetts, the youngest of three schildren. His father (who was born in Minnesota), worked as a secretary for the local YMCA; he invented a device for winding induction coils for motorboat engines. Snell was educated in the Brookline, Massachusetts schools and then enrolled at Dartmouth College in Hanover, New Hampshire where he continued his passion for mathematics and science, focusing on genetics. He received his Bachelor's degree from Dartmouth in 1926.

On the recommendation of John Gerould, his genetics professor at Dartmouth, Snell did graduate work at Harvard University with William E. Castle, the first American biologist to look for Mendelian inheritance in mammals. Snell earned his PhD from Harvard in 1930. His doctoral thesis was on genetic linkage in mice.

Snell then spent two years as a postdoctoral fellow at the University of Texas with H.J. Muller, who pioneered radiation genetics (and was also to win a Nobel Prize). Not surprisingly, Snell studied the genetic effects of x-rays on mice with Muller.

This experience "served to convince me that research was my real love," Snell wrote in his autobiography.[2]"If it were to be research, mouse genetics was the clear choice and the Jackson Laboratory, founded in 1929 by Dr. Clarence Cook Little, one of Castle's earlier students, almost the inevitable selection as a place to work." The Jackson Laboratory was (and still is) the world's mecca for mouse genetics.

In 1935 Snell joined the staff of the Jackson Lab in Bar Harbor on beautiful Mt. Desert Island by the coast of Maine and he remained there for the entire balance of his long career. In Bar Harbor, he met and married Rhoda Carson. Together they had three sons, Thomas, Roy, and Peter. In his leisure time, Snell enjoyed skiing, a passion he developed during his years at Dartmouth, as well as tennis.

In 1988, he authored a substantial book, Search for a Rational Ethic, on the nature of ethics and the rules by which we live. It includes an evolution-based ethic founded on biological realities that he believed to be applicable to all human beings.

Snell died in Bar Harbor, Maine on June 6, 1996.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "George_Davis_Snell". A list of authors is available in Wikipedia.
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