Life and health

Herman J. Almquist

Herman J. Almquist (1903–1994) was an American biochemist at the University of California, Berkeley, who independently confirmed vitamin K's discovery and showed in 1938 that bacteria synthesize it in the intestine.

Herman Kalckar

Herman Moritz Kalckar (1908–1991) was a Danish-born American biochemist who demonstrated oxidative phosphorylation in cell-free extracts, performed the first enzymic synthesis of a nucleoside, and identified the enzyme defect in galactosemia.

Herman N. Eisen

Herman N. Eisen (1918–2014) was an American immunologist who showed that antibodies are bivalent, described affinity maturation, and discovered serine esterases made by cytotoxic T lymphocytes.

Herman Nilsson-Ehle

Herman Nilsson-Ehle (1873–1949) was a Swedish geneticist and plant breeder whose 1909 wheat kernel-color experiments showed that continuously varying traits are inherited as discrete Mendelian factors.

Herman Waldmann

Herman Waldmann, born in 1945, is a British immunologist and Emeritus Professor at Oxford known for developing the therapeutic antibody Campath-1, now the drug alemtuzumab.

Hermann Brenner

Hermann Brenner is a German physician and cancer epidemiologist at the German Cancer Research Center in Heidelberg, known for colorectal cancer screening research and the period-analysis method.

Hermann Bujard

Hermann Bujard (1934–2020) was a German molecular biologist who developed the Tet system for switching genes on and off, founded Heidelberg University's ZMBH, and directed EMBO from 2007 to 2009.

Hermann Burmeister

Hermann Burmeister (1807–1892) was a German-born Argentine zoologist, paleontologist, and entomologist, professor at Halle and director of the Buenos Aires natural history museum from 1862 until his death.

Hermann Gutzmann

Hermann Carl Albert Gutzmann (1865–1922) was a German physician regarded as the founder of phoniatrics, the medical specialty for communication disorders, established at the Berlin Charité in 1905.

Hermann Haller (German nephrologist)

Hermann Haller, born 1953 in Stuttgart, is a German nephrologist and hypertension researcher who directed the Hannover kidney clinic from 1999 to 2022 and leads the MDI Biological Laboratory in Maine.

Hermann J. Muller

Hermann J. Muller, also known as Hermann Joseph Muller, was an American geneticist and founder of radiation genetics, awarded the 1946 Nobel Prize for showing X-rays induce mutations.

Hermann Knaus

Hermann Knaus was an Austrian gynecologist who, working independently of Kyūsaku Ogino, showed that ovulation occurs at a fixed interval before menstruation, providing the physiological basis of the Knaus–Ogino calendar rhythm method.

Hermann Mooser

Hermann Mooser (1891–1971) was a Swiss physician and microbiologist who first distinguished murine typhus from epidemic typhus, established rats as its reservoir, and gave his name to the Neill–Mooser reaction.

Hermann Oppenheim

Hermann Oppenheim (1858–1919) was a German neurologist in Berlin who described the Oppenheim reflex, amyotonia congenita, and dystonia musculorum deformans, and wrote the standard German neurology textbook of 1894.

Hermann Rahn

Hermann Rahn (1912–1990) was an American respiratory and environmental physiologist who chaired physiology at the University at Buffalo and was elected to the National Academy of Sciences.

Hermann Rein

Hermann Rein (1898–1953) was a German physiologist who invented the Thermostromuhr, a device for measuring blood flow in unopened vessels, and led the Göttingen Physiological Institute.

Hermann Rorschach

Hermann Rorschach (1884-1922), Swiss psychiatrist, creator of the Rorschach inkblot test; published Psychodiagnostik in 1921 with ten blots; died at 37; test's validity remains debated.

Hermann Sahli

Hermann Sahli (1856–1933) was a Swiss internist and hematologist who directed the Inselspital medical clinic in Bern and created the 1902 Sahli hemoglobinometer for measuring blood hemoglobin.

Hermann Schindelin

Hermann Schindelin is a structural biologist and biochemist, professor at the Rudolf Virchow Center in Würzburg since 2006, known for the first crystal structure of a ubiquitin E1 enzyme.

Hermann Steller

Hermann Steller is a molecular biologist at Rockefeller University whose laboratory identified the fruit fly cell death genes reaper, hid, and grim, work that underlies cancer therapeutics in clinical trials.

Hermann Wagner

Hermann Wagner, born 1941, is a German immunologist and physician known for T-cell differentiation research and for early work on toll-like receptors, holding the Technical University of Munich microbiology chair from 1989 to 2008.

Hermann Werner Siemens

Hermann Werner Siemens (1891–1969) was a German dermatologist and professor of dermatology at the University of Leiden who pioneered twin-based methodology in dermatological genetics, with several skin disorders named after him.

Hermann Wieland

Hermann Wieland (1885–1929) was a German pharmacologist, professor at Königsberg and Heidelberg, remembered for introducing lobeline as a respiratory stimulant and pure acetylene as an anesthetic.

Oct 21, 2026

Hermansky-Pudlak syndrome

Hermansky-Pudlak syndrome (HPS), a rare autosomal recessive disorder of lysosome-related organelles, causing oculocutaneous albinism, platelet-based bleeding diathesis, and in some subtypes pulmonary fibrosis, colitis, immunodeficiency.

Hermaphrodite

Hermaphrodite: an organism with both male and female reproductive functions, simultaneous or sequential (protandry, protogyny). Common in over 90% of plant genera and 70% of animal phyla; in humans the term is replaced by intersex.

Hermatypic and ahermatypic corals

Hermatypic and ahermatypic corals: the traditional split of stony corals into reef-building (zooxanthellate, shallow, sunlit) and non-reef-building (azooxanthellate, deep-sea) groups, with Wells 1933 origins and the 1985 Schuhmacher-Zibrowius terminology reform.