519,064 articles
Trypanotolerance
Trypanotolerance: inherited ability of West African taurine cattle, chiefly N'Dama and Baoulé (West African Shorthorn), to control trypanosome parasitaemia and anaemia and stay productive in tsetse-infested Africa without drugs.
Tryphaena (Ptolemaic princess)
Tryphaena was a Ptolemaic princess, eldest daughter of Ptolemy VIII and Cleopatra III, who became queen of the Seleucid Empire as wife of Antiochus VIII Grypus.
Tryphon
Tryphon was Ecumenical Patriarch of Constantinople from 928 until his deposition in 931, a monk installed as a placeholder by Emperor Romanos I and later venerated as a saint.
Trypillian culture pottery
Trypillian culture pottery is the hand-made ceramic ware of the Cucuteni–Trypillia communities of Ukraine, Moldova, and Romania, from about 5400 to 2700 BC, known for painted spirals.
Trypophobia
Trypophobia, or fear of holes, is an aversion to clusters of small holes or bumps, like lotus seedpods, described in 2013 and driven mainly by disgust.
Trypsin
Trypsin is a serine protease that cleaves proteins after arginine and lysine residues, produced as inactive trypsinogen in the pancreas, activated in the small intestine, and used in laboratories.
Trypsin inhibitor
Trypsin inhibitors, including SPINK1, aprotinin, gabexate, and soybean Kunitz and Bowman-Birk inhibitors, suppress trypsin; they protect the pancreas, act as plant defense and antinutritional proteins, and show no mortality benefit in acute pancreatitis trials.
Trypsinization
Trypsinization: detaching adherent cell cultures with trypsin plus EDTA, introduced by Rous and Jones in 1916; typical 0.05-0.5% trypsin-EDTA, serum neutralization, surface-protein damage, and Accutase alternatives.
Trypsinogen
Trypsinogen, also called protrypsin, is the pancreatic zymogen of trypsin, with human isoforms PRSS1 (cationic), PRSS2 (anionic), and PRSS3 (mesotrypsinogen); activated by enteropeptidase in the duodenum and used as IRT in cystic fibrosis newborn screening.
Tryptamine
Tryptamine is an indole alkaloid and trace amine, parent compound of serotonin, melatonin, and psilocybin, formed from tryptophan in plants, fermented foods, and the gut.
Tryptic digestion
Tryptic digestion, also called trypsin digestion, is a proteomics method in which the enzyme trypsin cleaves proteins after lysine and arginine into peptides for mass spectrometry, accounting for 96% of deposited peptide identifications.
Tryptic soy broth
Tryptic soy broth (TSB) is a liquid bacteriological culture medium made from digests of casein and soybean meal, used to grow a wide range of aerobic bacteria and fungi.
Tryptophan
Tryptophan (Trp, W) is an essential amino acid with an indole side chain that must come from the diet and is the precursor of serotonin, melatonin, and niacin.
Tryptophan 2,3-dioxygenase
Tryptophan 2,3-dioxygenase (TDO, formerly tryptophan pyrrolase) is a heme enzyme that performs the first, rate-limiting step of the kynurenine pathway, converting tryptophan to N-formylkynurenine, mainly in the liver.
Tryptophan catabolism
Tryptophan catabolism: enzymatic degradation of dietary tryptophan via the kynurenine pathway (~95%, TDO/IDO, yields NAD+), the serotonin pathway (TPH1/2), and microbial indole derivatives activating AHR.
Tryptophan synthase, beta chain
Tryptophan synthase beta chain (TrpB, TrpEb): PLP-dependent enzyme subunit condensing indole with L-serine to make L-tryptophan; allosterically regulated by TrpA, engineered stand-alone for noncanonical amino acids, antimicrobial drug target.
Tryptophanase
Tryptophanase (TnaA, EC 4.1.99.1, tryptophan indole-lyase) is a PLP-dependent bacterial enzyme cleaving L-tryptophan to indole, pyruvate, and ammonium; basis of the indole test and engineered indole production.
Tryptyk rzymski
Tryptyk rzymski (Roman Triptych) is a long religious poem by Pope John Paul II, written in Rome in 2002 and published in March 2003, comprising three meditations on God, creation, and Abraham.
Tryst with Destiny
Tryst with Destiny is Jawaharlal Nehru's midnight speech to India's Constituent Assembly on 14–15 August 1947, opening 'Long years ago we made a tryst with destiny,' closing with a pledge of dedication, and marking Indian independence.
Ts Madison
Ts Madison (Madison Hinton, born 1977, Miami) is an American transgender entertainer, entrepreneur, and LGBT activist who went viral in 2013, starred in WE tv's The Ts Madison Experience (2021), judges RuPaul's Drag Race, and holds a Beyoncé Renaissance writing credit.
TS Queen Mary
TS Queen Mary is a Clyde turbine excursion steamer launched in 1933, the last survivor of her class, which carried daytrippers until 1977 and is being restored to sail again.
TS Solar
TS Solar is a 200-megawatt photovoltaic power plant in Eureka County, Nevada, built next to the TS Power Plant to supply Nevada Gold Mines' sites, covering about 17% of their power demand since 2024.
TS-COVID trial
TS-COVID (NCT04627467) was a single-arm Phase 2 trial of chloroquine 150 mg base prophylaxis in 3,217 healthcare workers at Fundacion Valle del Lili, Cali, Colombia, during the COVID-19 pandemic; no results posted.
Ts'ai Wen-Chi (Mercurian crater)
Ts'ai Wen-Chi is a roughly 119-124 km impact crater on Mercury at about 23°N, 23°W, approved by the IAU in 1976 and named for the Han-dynasty Chinese poet and musician Cai Yan; a thrust-fault scarp cuts its wall and floor.
Ts'an Nu Mons
Ts'an Nu Mons, a 310-km-diameter mons on Venus at 27.20° S, 272.90° E, IAU-approved 1997, named for the Chinese goddess of silkworms; one of 124 named Venus montes.
Ts'ao Chan (Mercurian crater)
Ts'ao Chan is a 110-km-wide impact crater on Mercury at 13.31°S, 142.35°W, approved by the IAU in 1976 and named for the Chinese writer Cao Xueqin (c. 1715-1763), author of Dream of the Red Chamber; it lies in quadrangle H-7.
TSA PreCheck
TSA PreCheck is a U.S. trusted-traveler program giving vetted members a Known Traveler Number and expedited airport security screening with shoes and laptops kept on, for a five-year fee, alongside Global Entry and CLEAR.
Tsá Tué Biosphere Reserve
Tsá Tué Biosphere Reserve is a UNESCO biosphere reserve in Canada's Northwest Territories encompassing Great Bear Lake and part of its watershed, designated in 2016.
TSA-seq
TSA-seq (tyramide signal amplification sequencing) is a genomic method, introduced in 2018, that uses tyramide radical labeling to measure cytological distances of chromosome loci from nuclear structures like speckles.
Tsai Chin (周采芹) (actress)
Tsai Chin, also known as Zhou Caiqin, is a Chinese-born actress who starred in The World of Suzie Wong and played Auntie Lindo in The Joy Luck Club (1993).