72,234 articles
Ethan Basch
Ethan M. Basch is an American medical oncologist at the University of North Carolina whose research showed electronic symptom monitoring during cancer treatment improves quality of life and survival.
Ethan Bier
Ethan Bier is an American geneticist, Distinguished Professor at UC San Diego, known for active genetics and the mutagenic chain reaction, a CRISPR method bypassing Mendelian inheritance with gene-drive applications.
Ethan Dmitrovsky
Ethan Dmitrovsky is an American physician-scientist known for helping establish retinoic acid differentiation therapy for acute promyelocytic leukemia, and a former director of the Frederick National Laboratory for Cancer Research.
Ethan M. Shevach
Ethan M. Shevach is an American immunologist whose NIH laboratory performed pioneering studies of regulatory T cells; he retired in 2025 after a 53-year career at NIAID.
Ethandinitril
Ethandinitril (ethanedinitrile, EDN, cyanogen, C2N2) is a gaseous broad-spectrum fumigant against soil pests and timber insects; not EU-approved, registered in Australia, and developed as an ozone-safe methyl bromide replacement.
Ethanol fermentation
Ethanol fermentation (alcoholic fermentation) is the anaerobic microbial conversion of glucose to ethanol and CO2, done industrially by Saccharomyces cerevisiae yeast and the bacterium Zymomonas mobilis, yielding about 0.51 g ethanol per g glucose at up to 90% of theoretical yield.
Ethanol oxidation
Ethanol oxidation, also called alcohol catabolism, is the liver pathway converting ethanol to acetaldehyde, acetate, and acetyl-CoA via ADH, ALDH, CYP2E1, and catalase, producing NADH and toxic acetaldehyde.
Ethanol precipitation
Ethanol precipitation is a bench method for concentrating and desalting DNA or RNA: ethanol and salt make nucleic acids form a pellet that is collected by centrifugation and redissolved.
Ethanol sclerotherapy
Ethanol sclerotherapy is an image-guided injection of absolute alcohol into vascular malformations, cysts, or varicose veins, obliterating them by thrombosis and scarring; it is the most effective but most aggressive sclerosing agent.
Ethchlorvynol
Ethchlorvynol (Placidyl, Arvynol) is a discontinued nonbarbiturate sedative-hypnotic, C7H9ClO, introduced in 1955 for short-term insomnia treatment and later superseded because of dependence and withdrawal risks.
EthD domain
EthD domain (Pfam PF07110): a conserved bacterial protein-domain family related to the EthD protein of Rhodococcus ruber, thought essential to ETBE degradation; unrelated to eukaryotic EHD proteins.
ETHE1
ETHE1 (formerly HSCO) is a human gene on chromosome 19q13 encoding mitochondrial persulfide dioxygenase, which detoxifies hydrogen sulfide; biallelic mutations cause ethylmalonic encephalopathy, a severe autosomal recessive infantile disorder.
Ethel Cesarman
Ethel Cesarman is a Mexican-born physician-scientist, Professor of Pathology and Laboratory Medicine at Weill Cornell Medicine since 2007, who helped discover KSHV and showed it defines primary effusion lymphoma.
Ethel Letitia Cornell
Ethel Letitia Cornell (1892–1963) was an American educational and school psychologist with the New York State Education Department, known for the Cornell-Coxe Performance Ability Scale.
Ethel Shanas
Ethel Shanas was an American sociologist and gerontologist who led the National Surveys of the Aged, co-wrote Old People in Three Industrial Societies, and presided over the Gerontological Society in 1974.
Ethephon
Ethephon (Ethrel, Florel), (2-chloroethyl)phosphonic acid, CAS 16672-87-0, is a plant growth regulator releasing ethylene above pH 4.6; used mainly on cotton and cereals, EU approval renewed to 2039.
Ether addiction
Ether addiction: dependence on diethyl ether when inhaled or drunk for intoxication, grouped with inhalants. Documented in 19th-century Ireland's ether drinking epidemic and in case reports fulfilling DSM-IV dependence criteria without physical withdrawal.
Ether anesthesia
Ether anesthesia is general anesthesia produced by inhaling diethyl ether vapor, inducing unconsciousness, analgesia, and muscle relaxation; first shown publicly in 1846, it persists in low-resource settings.
Ether lipid
Ether lipids are glycerolipids with an ether bond at the sn-1 glycerol position, split into alkyl (plasmanyl) and alkenyl (plasmalogen) subclasses; peroxisome-derived, about 20% of mammalian phospholipids, linked to RCDP, Zellweger spectrum, and Alzheimer's disease.
Ethics Committees
Ethics committees, or hospital/clinical ethics committees (HECs, CECs), are multidisciplinary hospital bodies providing ethics consultation, education, and policy support; distinct from research ethics committees, they grew from 1% of US hospitals in the early 1980s to over 90% by the late 1990s.
Ethidimuron
Ethidimuron (sulfodiazol, Ustilan, MET 1486) is a thiadiazolyl dimethylurea herbicide, CAS 30043-49-3, C7H12N4O3S2, MW 264.3. Not approved in the EU and deregistered in Australia in 1997 for lack of toxicological data.
Ethidium bromide
Ethidium bromide (EtBr), a phenanthridinium fluorescent dye that intercalates between DNA base pairs, is the classical stain for agarose gel electrophoresis; adopted in 1969, it is a mutagen now widely replaced by SYBR Safe, GelRed, and similar dyes.
Ethinamate
Ethinamate (Valmid), 1-ethynylcyclohexyl carbamate, C9H13NO2, is a discontinued short-acting nonbarbiturate carbamate sedative-hypnotic formerly used for insomnia; DEA Schedule IV, half-life 2.5 hours.
Ethinylestradiol
Ethinylestradiol (EE), synthetic estrogen first synthesized 1938 from estrone, estrogen component of combined oral contraceptives, patches, and rings; oral bioavailability 38–48%; VTE risk drives shift to estradiol and estetrol pills.
Ethiofencarb
Ethiofencarb (Croneton, BAY 108594) is a Bayer-developed systemic carbamate insecticide, IRAC group 1A acetylcholinesterase inhibitor, used mainly against aphids; rat oral LD50 200 mg/kg, ADI 0-0.1 mg/kg bw, not EU-approved.
Ethion
Ethion (CAS 563-12-2), an organophosphate insecticide and acaricide inhibiting cholinesterase, used mainly on citrus and cattle; US registrations voluntarily canceled after EPA's 2001 RED, not approved in UK/EU.
Ethionamide
Ethionamide (Trecator) is an oral antituberculosis drug of the thioamide class, first synthesized in 1956 and used as a second-line agent in multidrug-resistant tuberculosis, though WHO now recommends against it in longer regimens.
Ethiopian wolf
Ethiopian wolf (Canis simensis), Simien jackal or Simien fox: endangered Afroalpine canid endemic to Ethiopian Highlands, 454 wolves in six isolated populations, rodent specialist, threatened by rabies and habitat loss.
Ethiprole
Ethiprole (乙虫腈), also called RPA 107382, is a second-generation phenylpyrazole (fiprole) insecticide discovered by Bayer CropScience Japan in 1994 and launched in 2005; it blocks the insect GABA-gated chloride channel and is used on rice, tea, and other crops.
Ethirimol
Ethirimol (5-butyl-2-ethylamino-6-methylpyrimidin-4-ol), a systemic hydroxypyrimidine (FRAC 8) fungicide marketed as Milstem for barley powdery mildew; now EU/UK non-approved and known mainly as bupirimate's main metabolite.