519,064 articles
Antisemitism on Wikipedia
Antisemitism on Wikipedia: documented antisemitic and anti-Israel bias in Wikipedia content and editing, per ADL 2025-2026 reports on coordinated editors, ArbCom bans, ADL source disputes, and Wikimedia Foundation responses.
Antisense lncRNAs in neurodegeneration
Antisense lncRNAs in neurodegeneration are regulatory RNAs transcribed opposite coding genes, prominent in the brain, with BACE1-AS elevated up to 6-fold in Alzheimer's brain and linked to tauopathies.
Antisense of depressing factor family
Antisense of depressing factor (ADF1, YCL058W-A), a protein-coding antisense gene of Saccharomyces cerevisiae embedded opposite the de novo gene MDF1; Adf1p represses MDF1, switching yeast between vegetative growth and mating.
Antisense RNA
Antisense RNA (natural antisense transcript, NAT): RNA transcribed opposite a gene, in cis or trans, regulating sense gene expression via transcriptional interference, epigenetic modification, RNA pairing, and endo-siRNAs; basis of ASO drugs.
Antisense therapy
Antisense therapy treats disease with short synthetic nucleic acid strands that bind disease-causing RNA to degrade it, alter splicing, or block translation; the first approval came in 1998.
Antisepsis
Antisepsis: chemical destruction or inhibition of microorganisms on living tissue using antiseptics such as chlorhexidine and povidone-iodine; originated with Joseph Lister's 1867 carbolic-acid surgery.
Antiseptic
Antiseptics are antimicrobial agents applied to living tissue to prevent infection; key agents include chlorhexidine, alcohols, and povidone-iodine, pioneered by Lister's 1867 carbolic-acid antisepsis.
Antiserum
Antiserum (plural antisera): antibody-containing blood serum conferring passive immunity, discovered by von Behring and Kitasato in 1890; now mainly animal-derived immunoglobulins for antivenoms, rabies, botulism, and diphtheria treatment.
Antiskyrmion
An antiskyrmion is a topologically stable, vortex-like magnetic spin texture with topological charge −1, the counterpart of the skyrmion, first observed in 2017 in tetragonal Heusler compounds.
Antiskyrmions in tetragonal Heusler magnets
Antiskyrmions in tetragonal Heusler magnets are topologically protected whirls of magnetization, the counterparts of skyrmions, first observed in 2017 in D2d-symmetric Heusler compounds like Mn1.4Pt0.9Pd0.1Sn.
Antisocial behaviour
Antisocial behaviour (ICD-11 MB23.1, 反社会的行動) is conduct violating others' basic rights or major age-appropriate norms, rules, or laws; classified as a clinical sign, mapped to dissociality, disinhibition, and low negative affectivity, and used in policing for non-criminal public misconduct.
Antisocial personality disorder
Antisocial personality disorder (ASPD, ICD-10 dissocial personality disorder) is a DSM-5 diagnosis of pervasive disregard for others' rights since age 15 with conduct disorder before 15; prevalence 2-3%, male-dominated, treatment evidence limited.
Antisolvent crystallization
Antisolvent crystallization, also called drowning-out or salting out, is a separation technique in which a second liquid added to a solution induces supersaturation and crystal growth.
Antisolvent precipitation
Antisolvent precipitation, also known as drowning-out or solvent displacement crystallization, adds a miscible nonsolvent to a solution to induce precipitation, used for purification and drug nanoparticles.
Antispasmodic
An antispasmodic, or spasmolytic agent, is a drug that relieves smooth muscle spasm, especially abdominal cramping in irritable bowel syndrome; common examples include dicyclomine and hyoscine.
Antisuyu
Antisuyu, in Quechua Anti Suyu, was the eastern quarter of the Inca Empire, one of four suyus, covering the upper Amazon slopes of the Andes northeast of Cusco.
Antisynthetase syndrome
Antisynthetase syndrome (ASSD, ASyS) is a rare autoimmune disease defined by anti-aminoacyl-tRNA synthetase antibodies, especially anti-Jo-1, with interstitial lung disease, myositis, arthritis, Raynaud's phenomenon, mechanic's hands, and fever.
Antitachycardia pacing
Antitachycardia pacing (ATP) is a painless ICD therapy that terminates ventricular tachycardia with short trains of paced beats, usually about 8 pulses, instead of a high-voltage shock.
Antitermination
Antitermination: gene regulation in which antiterminator proteins or RNAs let RNA polymerase read through terminators. Key examples: phage lambda N (RNA signal, nut/boxB, Nus factors) and Q (DNA signal), plus rRNA, RfaH, and bacterial CAT/ANTAR systems.
Antiterrorism and Effective Death Penalty Act of 1996
AEDPA, Public Law 104-132 (S. 735), signed April 24, 1996 after the Oklahoma City bombing; a US antiterrorism statute best known for restricting federal habeas corpus review via 28 U.S.C. § 2254(d).
Antitheism
Antitheism is active opposition to theism, belief in God, or religion as such, rather than mere disbelief; an antitheist need not be an atheist, and its most visible form came through New Atheism.
Antithesis (ἀντίθεσις)
Antithesis (ἀντίθεσις) is the rhetorical figure placing contrasting ideas in parallel structure, defined in Aristotle's Rhetoric 3.9, exemplified by Gorgias, Dickens, and Pope, and now a target of computational detection.
Antithrombin alfa
Antithrombin alfa (ATryn) is a recombinant human anticoagulant produced in transgenic goat milk, approved 2006 (EU) and 2009 (US) to prevent thromboembolism in hereditary antithrombin deficiency; EU authorization withdrawn 2018.
Antithrombin gamma
Antithrombin gamma, sold in Japan as ACOALAN, is a recombinant human antithrombin drug developed by Kyowa Kirin and approved in 2015 for congenital antithrombin deficiency and DIC.
Antithrombin iii human
Antithrombin III (human), also called AT III or antithrombin concentrate, is an intravenous plasma-derived serpin drug (Thrombate III, Atenativ) that treats and prevents thromboembolism in hereditary antithrombin deficiency; heparin boosts its activity about 1000-fold.
Antitoxin MazE-like
Antitoxin MazE-like: labile protein antitoxins of MazEF type II toxin-antitoxin systems, first found in E. coli. MazE neutralizes the ACA-cleaving endoribonuclease MazF, is degraded by ClpAP, and autoregulates the operon.
Antitoxin VbhA
Antitoxin VbhA (VbhA) is the 63-amino-acid type II protein antitoxin of the FicTA toxin-antitoxin module VbhTA on plasmid pVbh of Bartonella schoenbuchensis, neutralizing the Fic-domain toxin VbhT by competing with ATP binding.
Antitumor Drug Screening Assays
Antitumor drug screening assays are laboratory methods for testing how well anticancer drugs and biologic inhibitors work, ranking candidate compounds before toxicology studies or clinical trials.
Antium
Antium, modern Anzio, ancient Latium coastal city 56 km south of Rome; Volscian stronghold, Rome's first citizen colony (338 BCE), resort of Augustus and birthplace of Nero, with his great harbour and temple of Fortuna.
Antivenom
Antivenom (antivenin, antivenene): antibody medicine from venom-immunized horses or sheep, the only specific treatment for snakebite envenoming; first made by Calmette in 1894–1895, refined by Vital Brazil's specificity discovery, now produced in 46 laboratories across 30+ countries.