72,234 articles
Heather Berlin
Heather Berlin is a cognitive neuroscientist and clinical psychologist at Mount Sinai who studies the neural basis of impulsivity, compulsivity, and consciousness, and co-hosts StarTalk.
Heather Bresch
Heather Bresch, CEO of Mylan and daughter of Sen. Joe Manchin, led the company through the EpiPen 500% price-increase controversy and a 2007 West Virginia University MBA scandal.
Heather C. Mefford
Heather C. Mefford is an American physician-scientist and geneticist who studies the genetic basis of epilepsy and neurodevelopmental disorders at St. Jude Children's Research Hospital.
Heather Heying
Heather Heying is an American evolutionary biologist and zoologist known for field research on Madagascan poison frogs and for resigning from The Evergreen State College in 2017 amid campus protests.
Heather Pidcoke
Heather F. Pidcoke is an American transfusion-medicine and trauma-research scientist who worked at the U.S. Army Institute of Surgical Research, received a 2013 Presidential Early Career Award, and helped shape care of bleeding trauma patients.
Heather R. Christofk
Heather R. Christofk is an American biochemist and UCLA professor who studies how metabolism is regulated in normal and cancerous cells, known for work on PKM2 in tumors.
Heather Zar
Heather Zar is a South African pediatric pulmonologist and epidemiologist who chairs pediatrics at Red Cross Children's Hospital, University of Cape Town, and studies childhood respiratory disease.
Heavy chain disease
Heavy chain disease (Franklin's disease, gamma-HCD) is a rare B-cell disorder producing truncated immunoglobulin heavy chains without light chains; alpha, gamma, and mu types exist, alpha being most common and antibiotic-responsive early.
Heavy ion radiotherapy
Heavy ion radiotherapy, also known as carbon ion radiotherapy, is a radiation therapy technique using accelerated carbon ions to treat tumors, with sharp dose localization and elevated biological effectiveness.
Heavy menstrual bleeding
Heavy menstrual bleeding (HMB, formerly menorrhagia) is excessive menstrual blood loss interfering with quality of life, affecting 20-50% of reproductive-age women. Causes include fibroids, bleeding disorders; LNG-IUS is the best first-line treatment.
Hebbian theory
Hebbian theory, also called Hebbian learning or Hebb's rule, is the principle from Donald Hebb's 1949 book The Organization of Behavior that synapses strengthen when neurons repeatedly fire together.
Hebei Medical University
Hebei Medical University is a provincial public medical university in Shijiazhuang, Hebei, China, tracing its origin to an 1894 school founded by Li Hongzhang, the first government-run Western medicine school in modern China.
Hebeloma
Hebeloma, brown-spored ectomycorrhizal agaric genus (Hymenogastraceae/Cortinariaceae), notoriously hard to identify; 120+ species, ~9,000-collection database, hebeloma.org AI identifier.
Heberbiovac HB
Heberbiovac HB: Cuban recombinant hepatitis B vaccine by CIGB, HBsAg in Pichia pastoris, licensed 1990, WHO prequalified 2001, used in over 30 countries.
HEC-1
HEC-1 (HEC1, Human Endometrial Cancer-1) is the first human endometrial adenocarcinoma cell line, established in 1968 from a 71-year-old woman; its MMR-deficient, MSI-high sublines HEC-1-A and HEC-1-B carry KRAS G12D and TP53 R248Q.
HEC-1-A
HEC-1-A (also HEC1A, CVCL_0293, ATCC HTB-112) is a human endometrial adenocarcinoma cell line established in 1968 from a 71-year-old Japanese woman, parent of HEC-1-B; MSI-positive, KRAS-mutant, diploid, low estrogen sensitivity.
HEC-1-B
HEC-1-B (HEC1B, CVCL_0294, ATCC HTB-113) is a tetraploid human type II endometrial adenocarcinoma cell line established in 1968 from a 71-year-old Japanese woman as a subline of HEC-1, with KRAS G12D, TP53 R248Q, MSI, and low ER/PR.
HEC88473
HEC88473 (APL-18881) is Sunshine Lake Pharma's investigational long-acting GLP-1/FGF21 dual-receptor agonist Fc fusion protein injection for type 2 diabetes, obesity, and MASH; first such dual agonist in clinical stage, licensed to Apollo Therapeutics.
Hechtia
Hechtia is a genus of rosette-forming, drought-adapted bromeliads established by Klotzsch in 1835, centered in Mexico and numbering about 92 species, many described since 2007.
HECT domain
HECT domain (homologous to E6AP C-terminus), a ~350-residue catalytic module of E3 ubiquitin ligases; forms a thioester intermediate with ubiquitin on a conserved cysteine; 28 human HECT E3s in NEDD4, HERC, and other subfamilies.
HECT-domain E3 ubiquitin ligases
HECT-domain E3 ubiquitin ligases are a family of 28 human enzymes that attach ubiquitin to target proteins through a covalent ubiquitin-thioester intermediate, unlike RING ligases, which act only as scaffolds.
Hecticoceras
Hecticoceras is an extinct genus of oppeliid ammonite cephalopods from Middle Jurassic (Callovian) seas of Europe, India, and the Americas; type species Hecticoceras hecticum (Reinecke, 1818), type genus of Hecticoceratinae.
Hectocotylus
Hectocotylus: the modified mating arm of male cephalopods (octopods, squids, cuttlefishes) used to transfer spermatophores to females; typically the third right arm in octopuses, autotomized in Argonauta, Tremoctopus, and Ocythoe, and absent in some species like Ascarosepion tullbergi.
Hector F. DeLuca
Hector F. DeLuca is an American biochemist at the University of Wisconsin–Madison whose laboratory established how vitamin D is metabolized and turned it into drugs.
Héctor H. García
Héctor H. García, also known as Hector H. Garcia, is a Peruvian physician-scientist who studies cysticercosis, a leading cause of epilepsy, and leads research in Lima.
Hedda Wardemann
Hedda Wardemann is a German immunologist who heads the Division of B Cell Immunology at the German Cancer Research Center in Heidelberg, known for single-cell studies of human B cell tolerance and malaria antibodies.
Hedera
Hedera (ivy), including English ivy Hedera helix, is a genus of evergreen root-climbing woody vines in Araliaceae, native from Europe to Iran, flowering September to November, valued for wildlife and ornament but invasive in parts of North America, Australia, and New Zealand.
Hedera helix
Hedera helix, English or common ivy, is an evergreen woody climber (Araliaceae) native to Europe and temperate Asia, with lobed juvenile and unlobed flowering adult growth phases; invasive in North America, Australia, and New Zealand.
Hedge
Hedge (hedgerow): a line of planted or remnant shrubs and trees forming living field or garden boundaries. Key facts: Enclosure Acts planting 1760–1820, Hooper dating formula, Devon's 33,000 miles, England's 2024 cutting-ban and 2 m buffer rules.
Hedgehog
Hedgehog: spiny nocturnal mammal of subfamily Erinaceinae (family Erinaceidae) of Africa and Eurasia; rolls into a ball of modified-hair spines, eats invertebrates, resists snake venom; European hedgehog declining, Near Threatened since 2024.