John Biggers
The Modern Laboratory · People
The Modern Laboratory
John Biggers
He showed that a mammal's earliest life could begin in a dish, and spent seventy years learning what it needs there.
From veterinary science to the embryo. John Dennis Biggers was born in 1923 in Reading, England. He studied veterinary science at the Royal Veterinary College and earned a PhD in mammalian physiology from the University of London. His career took him to Australia and back to Britain before he settled in the United States.
Mice from the dish. In 1958, working in London with Anne McLaren, he reported in Nature that mouse embryos grown for a time in culture could be transferred to a foster mother and be born as healthy young. It was the first successful development of a mammalian early embryo in culture. Henry Leese later called it one of the most significant papers in the history of reproductive biology and medicine.
A long American career. In 1959 he moved to the University of Pennsylvania as King Ranch Research Professor of Reproductive Physiology. After a period at Johns Hopkins University, he joined Harvard Medical School in 1972 as Professor of Physiology. He studied embryo culture, embryo transfer, freezing and the design of experiments. With Joel Lawitts in the early 1990s he used a stepwise mathematical method, called simplex optimisation, to improve culture media for mouse embryos. The result carried embryos from the fertilised egg all the way to the blastocyst.
Teacher and adviser. Many younger scientists passed through his laboratory, among them David Gardner, who joined him at Harvard in 1988. Biggers served as chief scientific adviser to the Ethics Advisory Board of the United States Department of Health, Education and Welfare, which examined IVF under President Carter. He also advised the World Health Organization and served as president of the Society for the Study of Reproduction.
Honours and legacy. He received the Marshall Medal in 1990 and the Pioneer Award of the International Embryo Transfer Society. With Carol Kountz he wrote a biography of the reproductive biologist Walter Heape. John Biggers died on 7 April 2018 in Lexington, Massachusetts. His papers are now held at Harvard's Countway Library, open to anyone who wants to follow his thinking.
Also see: David Gardner
About the sources
- Countway Library, Harvard Medical School: “John D. Biggers papers open for research” (countway.harvard.edu): born 1923, died 2018; Harvard Medical School from 1972; Ethics Advisory Board; Walter Heape biography.
- University of Pennsylvania Almanac: John D. Biggers, School of Medicine (obituary): died 7 April 2018, Lexington, Massachusetts; King Ranch Research Professor from 1959; Pioneer Award; Marshall Medal.
- Progress Educational Trust, BioNews 945 (April 2018): “IVF pioneer John Biggers dies”.
- Society for Reproduction and Fertility, Marshall Medal recipients list (srf-reproduction.org): 1990, JD Biggers.
- Wikipedia: John D. Biggers (birthplace Reading; Royal Veterinary College; University of Sydney; Johns Hopkins University; Society for the Study of Reproduction), consulted October 2026.
- Baltz JM. Connections between preimplantation embryo physiology and culture. Journal of Assisted Reproduction and Genetics 2013;30(8):1001–1007.
- Lawitts JA, Biggers JD. Optimization of mouse embryo culture media using simplex methods. Journal of Reproduction and Fertility 1991;91(2):543–556.
- Gardner DK, Clarke RN, Lechene CP, Biggers JD. Development of a noninvasive ultramicrofluorometric method for measuring net uptake of glutamine by single preimplantation mouse embryos. Gamete Research 1989;24(4):427–438.
- McLaren A, Biggers JD. Successful development and birth of mice cultivated in vitro as early embryos. Nature 1958;182(4639):877–878.
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Compiled with AI-assisted research and checked against the original sources. Not yet peer-reviewed. Corrections are warmly welcomed.
