Life and health scientists

Leo James

Leo C. James is a British molecular biologist and virologist at the MRC Laboratory of Molecular Biology, known for discovering TRIM21 and intracellular antibody immunity.

Sep 17, 2026

Leo Kanner (1894–1981), Austrian-born American psychiatrist at Johns Hopkins; founded US academic child psychiatry, wrote the first English textbook Child Psychiatry (1935), and described early infantile autism in 1943.

Leo Lefrançois

Leo Lefrançois (1956–2013) was an American immunologist who chaired Immunology at the University of Connecticut and pioneered research on intestinal T cells and memory T-cell residence in tissues.

Leo Loeb

Leo Loeb (1869–1959) was a German-born American pathologist who pioneered experimental cancer research in the United States, showing that hormones could bring about cancerous transformation.

Leo Pardi

Leo Pardi (1915–1990) was an Italian zoologist and ethologist who, with Floriano Papi, showed sandhoppers find the sea by a sun compass, winning the 1989 Balzan Prize for Ethology.

Leo Sachs

Leo Sachs (Hebrew: לאו זקס; 1924–2013) was a German-born Israeli molecular biologist who founded the Department of Genetics at the Weizmann Institute and discovered colony-stimulating factors.

Leon A. Heppel

Leon A. Heppel (1912–2010) was an American biochemist who pioneered RNA enzymology and developed the osmotic shock method for releasing enzymes from bacteria, working at NIH and Cornell.

Leon Avery

Leon Avery is a biologist who studies feeding, starvation, and behavior in the nematode worm Caenorhabditis elegans, working at UT Southwestern and later Virginia Commonwealth University.

Léon Binet

Léon Binet was a French physician and physiologist who held the chair of physiology at the Paris Faculté de médecine and served 17 years as its dean.

León E. Rosenberg

León E. Rosenberg (1933–2022) was an American physician-scientist who defined the biochemical basis of inherited metabolic disorders and founded the first US human genetics department at Yale.

Leon Eisenberg

Leon Eisenberg (1922–2009) was an American child psychiatrist who moved the field from psychoanalysis to empirical trials, running the first studies of Ritalin in overactive children at Johns Hopkins and Harvard.

LEON HELLMAN

Leon Hellman was an American endocrinology researcher at Sloan-Kettering and Montefiore Hospital who showed that cortisol is secreted episodically and that luteinizing hormone secretion synchronizes with sleep during puberty.

Leon I. Goldberg

Leon I. Goldberg (1927–1989) was a cardiovascular pharmacologist and physician at Emory University who introduced dopamine for shock and congestive heart failure and characterized peripheral dopamine receptors.

Leon Lagnado

Leon Lagnado is a neuroscientist, Professor of Neuroscience at the University of Sussex since 2013, known for pioneering optophysiology and imaging synapses in the zebrafish retina; elected FMedSci in 2014.

Leon Orbeli

Leon Orbeli (Լևոն Աբգարի Օրբելի, 1882–1958) was a Soviet physiologist, Pavlov's favorite student, founder of evolutionary physiology in the USSR, and the main target of the 1950 Pavlovian session.

Leon Orris Jacobson

Leon Orris Jacobson (1911–1992) was an American hematologist at the University of Chicago whose 1943 nitrogen mustard trials were among the first forms of chemotherapy.

Leon V. Kochian

Leon V. Kochian is an American plant scientist known for research on plant mineral nutrition and aluminum tolerance, who joined the University of Saskatchewan in 2016.

Leona Samson

Leona D. Samson is an American biologist known for her work on DNA repair and how cells respond to DNA alkylation damage, now professor emerita at MIT.

Leonard Amby Maynard

Leonard Amby Maynard (1887–1972) was an American nutrition scientist at Cornell University who wrote the textbook Animal Nutrition and was elected to the National Academy of Sciences in 1944.

Leonard B. Saltz

Leonard B. Saltz, also known as Leonard Saltz, is an American medical oncologist at Memorial Sloan Kettering who specializes in gastrointestinal cancers, especially colorectal cancer.

Leonard B. Seeff

Leonard B. Seeff is a South African-born American physician-scientist in hepatology known for defining the natural history of transfusion-associated hepatitis C through decades of VA cohort follow-up.

Leonard C. Harrison

Leonard C. Harrison is an Australian immunologist at WEHI in Melbourne known for insulin receptor research and nasal insulin vaccine trials for type 1 diabetes.

Leonard Cockayne

Leonard Cockayne (1855–1934) was a New Zealand botanist regarded as the country's first ecologist, whose book The Vegetation of New Zealand remained the standard work for 70 years.

Leonard D. Hudson

Leonard D. Hudson, born 1938, is an American pulmonary and critical care physician at the University of Washington and Harborview in Seattle, known for research on ARDS.

Leonard D. Kohn

Leonard D. Kohn (1935–2012) was an American thyroid researcher who led a section at the NIH for 25 years, developed the FRTL-5 bioassay, and won the Ingbar Award.

Leonard Guarente

Leonard Guarente is an American molecular biologist and aging researcher, the Novartis Professor of Biology at MIT known for showing that sirtuins regulate aging through NAD, and a founder of Elysium Health.

Leonard H. Rome

Leonard H. Rome is an American cell biologist at UCLA who co-discovered the vault, one of the largest ribonucleoprotein particles in the cell, in 1986.

Leonard H. van den Berg

Leonard H. van den Berg (Leonard Hendrik van den Berg, born 1963) is a Dutch neurologist and professor of experimental neurology at UMC Utrecht, known for ALS research and Project MinE.

Leonard Herzenberg

Leonard Herzenberg (1931–2013) was an American immunologist and geneticist at Stanford University who led the development of the fluorescence-activated cell sorter, winning the 2006 Kyoto Prize.