72,234 articles
CATIS trial
CATIS (China Antihypertensive Trial in Acute Ischemic Stroke, NCT01840072) was a 4071-patient randomized trial in 26 Chinese hospitals testing immediate blood pressure lowering in acute ischemic stroke; it was neutral, as was CATIS-2, while CATIS-ICAS tests rivaroxaban plus aspirin.
Catkin
Catkin (ament): a slim, drooping spike of reduced, unisexual, petal-less flowers on trees such as willow, birch, oak, and hazel; wind-pollinated, a major spring allergen source, named from Dutch katteken (kitten) in 1578.
Catla (कतला)
Catla (Catla catla, कतला), giant river carp, one of the three Indian major carps of South Asia. A fast-growing surface-feeding zooplankton eater, farmed in polyculture across India, Bangladesh, and Pakistan; induced breeding since 1957 supplies its seed.
Catnip
Catnip (Nepeta cataria), a mint-family perennial herb, contains nepetalactone, which makes about 68% of domestic cats euphorically rub and roll and repels mosquitoes comparably to DEET.
Catopsis berteroniana
Catopsis berteroniana, the powdery strap airplant, is an epiphytic tank bromeliad from Florida to tropical America, protocarnivorous via waxy, UV-reflecting leaves that trap insects; endangered in Florida.
Catostomidae
Catostomidae, the suckers, is a Holarctic family of Cypriniformes freshwater fishes native to North America, China, and northeast Siberia, defined by thick fleshy inferior mouths, single-row pharyngeal teeth, tetraploidy, and about 35% threatened species.
Catridecacog
Catridecacog (Tretten, NovoThirteen) is Novo Nordisk's recombinant coagulation factor XIII A-subunit made in yeast, given as 35 IU/kg monthly intravenously to prevent bleeding in congenital FXIII A-subunit deficiency.
Catriona Jamieson
Catriona H.M. Jamieson is a Canadian-American physician-scientist at UC San Diego who studies cancer stem cells, directs the Sanford Stem Cell Institute, and developed the ADAR1 inhibitor rebecsinib.
Cattle
Cattle (Bos taurus, Bos indicus), domesticated from the aurochs about 10,000 years ago in the Fertile Crescent and independently in South Asia, are the main global dairy animal, supplying 81 percent of world milk.
Cattle drives in the United States
Cattle drives in the United States, or Texas trail drives (1866–1890), moved longhorns north over the Chisholm, Goodnight-Loving, and Western trails to Kansas railheads; about 5 million head, ended by quarantines, barbed wire, and railroads.
Cattle grid
Cattle grid (cattle guard, Texas gate, stock grid): a pit across a road covered with parallel metal bars that lets vehicles pass while deterring hoofed livestock; originated in the Great Plains around 1905 from railroad guards.
Cattle prod
A cattle prod, also called a stock prod, is a handheld electrified rod used to move livestock, intended as a last resort and regulated for animal welfare.
Cattle slaughter in India
Cattle slaughter in India is regulated by state laws under Article 48's directive; most states ban cow slaughter, the Supreme Court shaped limits in 1958 and 2005, and exports are buffalo meat.
Cattleya
Cattleya (corsage orchid, queen of orchids) is a Neotropical orchid genus from Costa Rica to southern tropical America, with 136 accepted species, epiphytic pseudobulb growth, and a 2014 four-subgenera classification.
Cattleya labiata
Cattleya labiata, the crimson-lipped Brazilian orchid described by Lindley in 1824 and namesake of the genus Cattleya, a unifoliate autumn-flowering epiphyte endemic to Brazil, assessed Vulnerable, parent of about 12,000 hybrids.
Cattleya trianae
Cattleya trianae (flor de Mayo, Christmas orchid) is an epiphytic Colombian Andean orchid, the national flower of Colombia since 1936, endangered (EN D), on CITES Appendix I, with fragrant flowers up to 20 cm across.
Catumaxomab
Catumaxomab (Removab, Korjuny) is a bispecific trifunctional rat-mouse anti-EpCAM x anti-CD3 antibody for malignant ascites; EU-approved 2009, withdrawn 2017, reapproved 2025.
Caturbhadra kvatha curna
Caturbhadra kvatha curna (Cāturbhadra kvātha cūrṇa, चतुर्भद्र), an Ayurvedic four-herb decoction powder from Bhaishajya Ratnavali (ginger, Tinospora, Aconitum heterophyllum, Cyperus rotundus) for dyspepsia and Grahani roga; distinct from Balachaturbhadra churna.
Caturbhuja rasa
Caturbhuja rasa (चतुर्भुजरस), also Chaturbhuj Ras, is a Kharaliya herbo-metallic Ayurvedic Rasashastra formulation of mercury, gold, arsenic disulphide, and orpiment, dosed at 125 mg, used classically for psychosis, epilepsy, and Kampavata.
Caturjata Curna
Caturjata Curna (चतुर्जात चूर्ण, Chaturjata Churna), a classical Ayurvedic polyherbal powder of equal parts cinnamon bark, cardamom seed, Cinnamomum tamala leaf, and Mesua ferrea stamen, used for tastelessness and Kapha disorders; distinct from other churna formulations.
Caturmukha rasa
Caturmukha rasa (Chaturmukha Rasa), a classical Ayurvedic herbo-mineral tablet of purified mercury, sulphur, iron bhasma, and mica bhasma, used for asthma, anemia, and diabetes, with rat antidiabetic and toxicity studies.
Caucasian Shepherd Dog (Кавказская овчарка)
Caucasian Shepherd Dog (Кавказская овчарка, Caucasian Ovcharka, Russian Bear Dog): giant FCI Group 2 livestock-guardian breed from the Caucasus, standardized in the USSR, FCI Standard No. 328, males 72–75 cm, minimum 50 kg, fearless guardian.
Caucasus-Lower Volga
Caucasus-Lower Volga (CLV) cline: an Eneolithic genetic gradient of CHG-ancestry populations from Neolithic Armenia to Berezhnovka on the Lower Volga, identified by Lazaridis et al. 2024-2025; contributed four-fifths of Yamnaya ancestry and links to Indo-Anatolian origins.
Cauda equina
Cauda equina, "horse's tail" in Latin, is the bundle of lumbar, sacral, and coccygeal nerve roots descending from the conus medullaris (spinal cord ends L1-L2) to the coccyx; compression causes cauda equina syndrome, a surgical emergency.
Cauda equina syndrome
Cauda equina syndrome (CES): surgical emergency from compression of lumbosacral nerve roots, defined by bladder, bowel, or sexual dysfunction with back and leg pain; diagnosed by urgent MRI, treated by decompression, ideally within 48 hours.
Caudal Anesthesia
A caudal block is a regional anesthetic technique in which local anesthetic is injected through the sacral hiatus into the caudal epidural space, used chiefly in children for lower-body surgery.
Caudal appendage
Caudal appendage, or human tail, ICD-11 LB73.29: a congenital skin-covered protrusion on the lower back, classed as true tail or pseudotail, often a marker of occult spinal dysraphism.
Caudal duplication
Caudal duplication (caudal duplication syndrome, dipygus, split notochord syndrome) is a rare congenital anomaly duplicating cloaca- and notochord-derived structures: distal colon, genitourinary organs, and lower spine, with unknown prevalence and no established inheritance.
Caudal regression syndrome
Caudal regression syndrome (caudal dysplasia) is a rare congenital spectrum of lumbosacral spinal agenesis with spinal cord, lower limb, and urogenital anomalies, strongly associated with maternal pre-gestational diabetes and ranging to sirenomelia.
Caudata
Caudata (Urodela), the salamanders and newts, is an order of tailed amphibians with about 770 living species in 10 families, Holarctic distribution, a Jurassic fossil record, and the largest genomes of any tetrapods.