72,234 articles
Gradient echo
Gradient echo (GRE) is an MRI pulse sequence that forms its echo by reversing a readout gradient instead of a refocusing pulse, allowing fast, T2-weighted imaging.
Grady F. Saunders
Grady F. Saunders is a molecular biologist at The University of Texas MD Anderson Cancer Center, known for the 1991 positional cloning of the candidate aniridia gene, now called PAX6.
Grady Memorial Hospital
Grady Memorial Hospital, Atlanta's first publicly funded hospital (1892), Georgia's largest hospital and safety-net Level I trauma center; distinct from OhioHealth's Grady Memorial Hospital in Delaware, Ohio.
Graeme Clark (otolaryngologist)
Graeme Clark, born in Camden, New South Wales in 1935, is an Australian otolaryngologist whose Melbourne team developed the first multi-channel cochlear implant, commercialized as the Cochlear/Nucleus device.
Graeme I. Bell
Graeme I. Bell is an American-trained biochemist and human geneticist at the University of Chicago known for the genetics of diabetes, including the first positional cloning of calpain-10 in type 2 diabetes.
Graeme J. Hankey
Graeme J. Hankey is an Australian neurologist and stroke clinician-scientist who holds the Perron Institute Chair in Stroke Research at the University of Western Australia, Perth.
Graeme Meintjes
Graeme Meintjes is a South African infectious-diseases physician, Professor of Medicine at the University of Cape Town, known for research on HIV-associated tuberculosis and cryptococcal meningitis.
Graeme W. Davis
Graeme W. Davis is a neuroscientist at the University of California, San Francisco, known for establishing homeostatic synaptic plasticity, the study of how neurons stabilize their function.
Graeme Wistow
Graeme J. Wistow is a molecular biologist at the US National Eye Institute in Bethesda, Maryland, known for gene sharing, lens crystallin structure, and NEIBank.
GRAF, BAR domain
GRAF BAR domain: the crescent-shaped Bin/amphiphysin/Rvs module of GRAF family RhoGAPs (GRAF1/ARHGAP26, GRAF2, GRAF3, oligophrenin-1), a BAR-PH unit that senses curvature, tubulates CLIC/GEEC endocytic membranes, and inhibits GAP activity.
Graft Survival
Graft survival is the persistence of a transplanted organ's function in a recipient, measured by Kaplan-Meier or death-censored estimates; rejection, HLA mismatch, and donor type are key determinants.
Graft urethroplasty
Graft urethroplasty is a urological technique that repairs long or recurrent urethral strictures by sewing in a free graft, most often buccal mucosa from the inside of the cheek.
Graft-chimaera
Graft-chimaera: a plant with genetically distinct tissues from two graft partners, also called graft chimera. Adam's laburnum (+Laburnocytisus adami, 1825) is the classic example; Winkler produced the first artificial ones in 1907.
Graft-versus-host disease
Graft-versus-host disease (GVHD): donor T cells from an allogeneic hematopoietic transplant attack recipient skin, gut, bile ducts, and lymph nodes; classified acute or chronic by NIH clinical criteria, treated with steroids, ruxolitinib, and newer prophylaxis.
Grafting
Grafting joins a scion and rootstock so two plants grow as one; ancient technique (5th century BCE) used for fruit trees and vegetables to add disease resistance, stress tolerance, and yield stability.
Grafton Elliot Smith
Grafton Elliot Smith (1871–1937) was an Australian-born anatomist and Egyptologist who held chairs in Cairo, Manchester, and London and pioneered palaeopathology on ancient Nubian remains.
Graham A. Colditz
Graham A. Colditz is an Australian-born cancer epidemiologist at Washington University School of Medicine in St. Louis, known for linking postmenopausal hormone therapy to breast cancer risk and for breast cancer risk prediction models.
Graham A. MacGregor
Graham A. MacGregor, also known as G A MacGregor, was a British professor of cardiovascular medicine who founded Action on Salt and drove the UK's national salt-reduction program.
Graham A.R. Johnston
Graham A.R. Johnston, born 1939 in Sydney, is an Australian medicinal chemist and pharmacologist who established bicuculline as a GABA antagonist and was Professor of Pharmacology at the University of Sydney from 1980 to 2011.
Graham C. Walker
Graham C. Walker (born 1948) is an American molecular biologist, a longtime MIT professor elected to the National Academy of Sciences in 2013, known for DNA repair research.
Graham Carpenter
Graham Carpenter is Professor Emeritus of Biochemistry at Vanderbilt University who joined Stanley Cohen's EGF program, helped characterize the epidermal growth factor receptor in 1978, and studied ErbB receptor signaling.
Graham D. Farquhar
Graham D. Farquhar, also known as G. D. Farquhar, is an Australian plant physiologist at the Australian National University, best known for the 1980 Farquhar–von Caemmerer–Berry model of photosynthetic CO2 assimilation.
Graham F. Hatfull
Graham F. Hatfull is a University of Pittsburgh microbiologist who studies mycobacteriophages, built the PhagesDB collection, and developed phages used in the first engineered phage therapy.
Graham H. Jeffries
Graham H. Jeffries (1929–2023) was a New Zealand–trained gastroenterologist who became founding chair of medicine at Penn State and showed antibodies to intrinsic factor in pernicious anemia.
Graham L. Collingridge
Graham L. Collingridge, also published as G.L. Collingridge, is a neuroscientist who showed how the NMDA receptor triggers long-term potentiation, the strengthening of synapses underlying learning and memory.
Graham Little-Piccardi-Lassueur syndrome
Graham Little-Piccardi-Lassueur syndrome (GLPLS, Graham Little syndrome) is a rare variant of lichen planopilaris with a triad of scarring scalp alopecia, non-scarring axillary and pubic hair loss, and follicular keratotic papules, mainly in women aged 30 to 70.
Graham M. Teasdale
Graham M. Teasdale, also known as Graham Teasdale, is a Scottish neurosurgeon and Emeritus Professor at the University of Glasgow who co-created the Glasgow Coma Scale.
Graham R.V. Hughes
Graham R.V. Hughes, known as Graham Hughes, is a British rheumatologist who described the antiphospholipid syndrome, known as Hughes syndrome, and founded the lupus research unit at St Thomas' Hospital in London.
Graham Steell
Graham Steell (1851–1942) was a British physician and cardiologist at Manchester Royal Infirmary, regarded as the leading heart-disease consultant in northern England; the Graham Steell murmur is named for him.
Graham T. McMahon
Graham T. McMahon, also known as Graham McMahon, is an Irish-trained endocrinologist and President and CEO of the Accreditation Council for Continuing Medical Education in Chicago since 2015.