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Trygve Nagell

Trygve Nagell, born Trygve Nagel, was a Norwegian number theorist and professor at Uppsala University from 1931 to 1962, known for the Ramanujan–Nagell equation and the Nagell–Lutz theorem.

Trygve Schjøtt

Trygve Schjøtt (5 August 1882 – 18 December 1960), Norwegian sailor from Bergen, Bergens Seilforening member; won 1920 Antwerp Olympic gold in the 10-metre Open class aboard Mosk II with cousin Halfdan Schjøtt; later a merchant fleet officer in WWII.

Trygve Slagsvold Vedum

Trygve Slagsvold Vedum is a Norwegian politician who has led the Centre Party since 2014 and served as Minister of Finance from 2021 to 2025.

Trygve Solstad

Trygve Solstad is a Norwegian researcher and associate professor at the Norwegian University of Science and Technology in Trondheim, working on numerical cognition, mathematical learning, and artificial intelligence.

Trying (TV series)

Trying is a British comedy-drama created by Andy Wolton for Apple TV (2020-present), starring Rafe Spall and Esther Smith as a London couple pursuing adoption after infertility; five seasons, 40 episodes, 96% Rotten Tomatoes average.

Trying Not to Think About It

trying not to think about it is JoJo's sixth release, a 12-track, 32-minute R&B EP on Warner Records released October 1, 2021, a "capsule project" about anxiety and depression, distinct from Juliana Hatfield's 1997 song of the same name.

Trying Times (album)

Trying Times is James Blake's seventh studio album, released March 13, 2026 on Good Boy Records, his first independent release after leaving Republic Records; features Dave, Monica Martin, and Leonard Cohen and Dizzee Rascal samples.

Trying to Get to Heaven Before They Close the Door

"Trying to Get to Heaven Before They Close the Door" is the second season premiere of the HBO teen drama Euphoria, written and directed by Sam Levinson.

Trypan blue staining

Trypan blue staining is a dye-exclusion assay in which dead cells take up a blue dye, allowing rapid assessment of cell viability under a microscope.

Trypanorhyncha

Trypanorhyncha (Diesing, 1863) is an order of marine tapeworms, adults parasitizing sharks and rays, larvae infecting teleosts and invertebrates; defined by four hook-bearing retractile tentacles, about 315 species in four superfamilies.

Trypanosoma

Trypanosoma: genus of parasitic hemoflagellate protozoa. T. brucei causes African sleeping sickness via tsetse flies; T. cruzi causes Chagas disease via triatomine bugs; VSG antigenic variation enables chronic infection.

Trypanosoma brucei

Trypanosoma brucei, a tsetse-transmitted hemoflagellate parasite, causes human African trypanosomiasis (sleeping sickness) via subspecies gambiense and rhodesiense, and nagana in cattle via T. b. brucei; it evades immunity through VSG antigenic variation.

Trypanosoma cruzi

Trypanosoma cruzi, the flagellate protozoan causing Chagas disease (American trypanosomiasis), transmitted by triatomine kissing bugs; six DTU lineages TcI-VI, about 8 million infected, discovered by Carlos Chagas in 1908.

Trypanosoma Tc-38 (p38) protein

Tc-38 (p38) is a kinetoplastid-specific mitochondrial DNA-binding protein of Trypanosoma and Leishmania, evolved from a prokaryotic ArdC-N domain, that binds minicircle replication origin sequences and is required to initiate kinetoplast DNA minicircle replication.

Trypanosomiase

Trypanosomiase (trypanosomiasis): parasitic diseases caused by Trypanosoma protozoa; African tsetse-borne forms are sleeping sickness (T. b. gambiense, T. b. rhodesiense) and nagana (T. congolense, T. vivax), with Chagas disease, surra and dourine as related forms.

Trypanosomiasis

Trypanosomiasis: parasitic diseases caused by Trypanosoma protozoa. African sleeping sickness (T. brucei, tsetse flies, under 1,000 cases yearly) and American Chagas disease (T. cruzi, triatomine bugs, 8 million infected).

Trypanosomiasis transmission by tsetse flies

Trypanosomiasis transmission by tsetse flies is the cyclical passage of Trypanosoma parasites through the fly, taking one to three weeks before the fly becomes infective for life.

Trypanothione reductase

Trypanothione reductase (TR, TryR, EC 1.8.1.12) is an NADPH-dependent flavoprotein homodimer unique to Trypanosoma and Leishmania parasites; it reduces trypanothione disulfide and is a validated, parasite-selective drug target absent from the mammalian host.

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.