Life and health

Harald Loe

Harald Loe, also known as Harald A. Löe, was a Norwegian-born dental researcher, a founder of modern periodontology, and director of the US National Institute of Dental Research.

Harald Reuter (1934–2022) was a German-born pharmacologist and physiologist, professor at the University of Bern from 1969 to 1999, credited with discovering cardiac calcium channels and sodium/calcium exchange.

Harald Schmidt

Harald Schmidt, also known as Harald H.H.W. Schmidt, is a pharmacologist and professor emeritus at Maastricht University, known for nitric oxide research and drug repurposing.

Harald Schwalbe

Harald Schwalbe (born 1966) is a German chemist, professor at Goethe University Frankfurt, known for NMR studies of riboswitch RNA regulation and protein folding, and executive director of Instruct-ERIC.

Oct 10, 2026

Harald Sonnenberg

Harald Sonnenberg (1935–2026) was a German-born renal physiologist at the University of Toronto who won the 1986 Canada Gairdner International Award for discovering atrial natriuretic factor.

Harald Sontheimer

Harald Sontheimer is an American neuroscientist known for discovering how brain tumors cause epilepsy, and Professor and Chair of Neuroscience at the University of Virginia since 2021.

Harald Stein

Harald Stein (born 1942 in Kiel) is a German hematopathologist who discovered Ki-67 and CD30, described new lymphoma entities, and led pathology at the Charité.

Harald Stenmark

Harald Stenmark is a Norwegian cell biologist and cancer researcher, professor at the University of Oslo, known for work on endocytosis, the FYVE domain, and the ESCRT machinery.

Harald von Boehmer

Harald von Boehmer (1942–2018) was a German-born immunologist who established how the thymus selects T cells and discovered the pre-T cell receptor, working at Basel, Paris, and Harvard.

Harald zur Hausen

Harald zur Hausen (1936–2023) was a German virologist who established that HPV causes most cervical cancer, earning half of the 2008 Nobel Prize in Physiology or Medicine.

Harambe

Harambe (May 27, 1999 – May 28, 2016) was a western lowland silverback gorilla at the Cincinnati Zoo, shot after a three-year-old boy fell into his enclosure; his death became a defining internet meme.

Haratala bhasma

Haratala bhasma (Haratal Bhasma) is an Ayurvedic Rasashastra medicine: purified orpiment (arsenic trisulfide, As2S3) incinerated into a fine ash, used internally and externally after Shodhana, with classical doses of 30-60 mg.

Harbin Medical University

Harbin Medical University (哈尔滨医科大学, HMU) is a medical university in Harbin, China, founded in 1926 by Wu Liande and merged with the Red Army Medical School lineage; known for cardiovascular research and affiliated hospitals.

Harbor seal

Harbor seal (Phoca vitulina), a small earless true seal of northern temperate coasts; 18 US stocks, 12 in Alaska; widest coastal pinniped range, 28–78.5° N; MMPA-protected.

HARBOR trial

The HARBOR trial was a 24-month, phase 3 clinical trial of ranibizumab in 1,097 patients with neovascular age-related macular degeneration, run at 100 sites from 2009 to 2012.

Harbour BioMed BCMA×CD3 bispecific T-cell engager (licensed to Otsuka)

HBM7020, a BCMA×CD3 bispecific T-cell engager from Harbour BioMed's HBICE/Harbour Mice platforms, uses a 2+1 format to deplete BCMA-positive B cells; NMPA IND cleared 2023, licensed ex-Greater China to Otsuka in June 2025 for autoimmune disease.

Harbour porpoise

Harbour porpoise (Phocoena phocoena), also harbor or common porpoise: small Northern Hemisphere coastal cetacean, IUCN Least Concern globally with three subspecies, ~130 kHz echolocation, and gillnet bycatch as its main threat.

Hard clam

Hard clam (Mercenaria mercenaria), also called northern quahog or quahog, is a western Atlantic venerid bivalve from the Gulf of St. Lawrence to Texas, up to 5 inches, supporting major U.S. East Coast hatchery-based aquaculture and wild fisheries.

Hard corn

Hard corn (heloma durum, clavus) is the most common corn type: a circumscribed hyperkeratotic lesion with a hard central keratin core on toe bony prominences, caused by friction and pressure, treated by paring, salicylic acid, and footwear change.

Hard palate

Hard palate: bony anterior two thirds of the mouth's roof, formed by maxillary palatine processes and palatine bone horizontal plates, separating oral and nasal cavities; develops from the secondary palate between weeks 6 and 12.

Hard pines (subgenus Pinus)

Hard pines, also called yellow pines or diploxylon pines, are one of the two subgenera of the genus Pinus, defined by two vascular bundles per needle.

Hardeep Singh (physician)

Hardeep Singh is a physician and health services researcher at Baylor College of Medicine in Houston, known for measuring diagnostic error and co-developing the SAFER EHR safety guides.

Harden M. McConnell

Harden M. McConnell (H. M. McConnell, 1927–2014) was an American biophysical chemist at Stanford whose spin-label technique opened the study of cell membranes and lipid domains.

Harderoporphyria

Harderoporphyria (HARPO), a rare autosomal recessive erythropoietic variant of hereditary coproporphyria caused by biallelic CPOX mutations such as K404E, presents neonatally with hemolytic anemia, jaundice, and massive fecal harderoporphyrin excretion.

Hardikar syndrome

Hardikar syndrome (HDKR, cholestasis-pigmentary retinopathy-cleft palate syndrome) is an ultra-rare X-linked dominant MED12 loss-of-function disorder affecting females, with cleft lip/palate, cat's-paw retinopathy, hepatobiliary disease, and normal cognition.

Hardiness zone

Hardiness zone: geographic zones based on average annual extreme minimum winter temperature; USDA Plant Hardiness Zone Map zones 1–13 in 10°F bands with 5°F a/b half zones, 2023 edition using 1991–2020 data.

Hardware Removal

Hardware removal (implant removal, metalwork removal) is the surgical extraction of orthopedic plates, screws, and nails after fracture fixation, done for pain, infection, or broken hardware; evidence does not support routine removal of asymptomatic implants such as syndesmotic screws.