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Conjunctival vascular disorders
Conjunctival vascular disorders (ICD-11 9A61.4; conjunctival vascular disease) are disorders of conjunctival blood vessels, covering hyperemia, subconjunctival hemorrhage, and vascular tumors and malformations such as lymphangioma and hemangioma.
Conjunctivitis
Conjunctivitis (pink eye) is inflammation of the conjunctiva causing red, discharging eyes; mainly viral (~80% of infectious cases), bacterial, or allergic; contagious viral and bacterial forms usually self-resolve.
Conjunctivitis due to adenovirus
Conjunctivitis due to adenovirus (adenoviral conjunctivitis, ICD-11 1D84.0), the leading infectious conjunctivitis worldwide, includes pharyngoconjunctival fever and epidemic keratoconjunctivitis (HAdV types 8, 19, 37, 54), a self-limited but highly contagious disease with corneal subepithelial infiltrates.
Conjunctivochalasis
Conjunctivochalasis (CCH), also called conjunctival chalasis, is a loose, redundant folding of the bulbar conjunctiva, typically bilateral and inferior, mainly from aging, causing tear film instability, irritation, and epiphora; treated with lubricants, anti-inflammatories, or conjunctival excision or cauterization.
CONNECT trial (NCT00636675)
CONNECT trial (NCT00636675), or CONNECT for Quality, a Duke University cluster-randomized trial in 24 US nursing homes testing whether CONNECT staff-interaction training improved the FALLS quality improvement program; it modestly improved communication but did not reduce fall rates.
Connective tissue
Connective tissue: one of the four basic animal tissue types, cells embedded in abundant extracellular matrix of collagen, elastic, and reticular fibers plus ground substance; includes loose and dense connective tissue proper and specialized adipose, cartilage, bone, blood, and lymphatic tissue.
Connective tissue cell
Connective tissue cell (CL:0002320): any cell of the body's supporting framework tissue, including fibroblasts, adipocytes, chondrocytes, and osteocytes; mesoderm- or neural crest-derived, matrix-secreting, central to wound healing and fibrosis.
Connective tissue disease
Connective tissue disease covers over 200 disorders of the body's structural matrix: autoimmune systemic rheumatic diseases (SLE, systemic sclerosis, Sjögren's, myositis, MCTD) and hereditary disorders (Marfan, Ehlers-Danlos), covering classification, epidemiology, pathogenesis, treatment, and prognosis.
Connective tissue hamartoma
Connective tissue hamartoma (connective tissue nevus, ICD-11 LC20): benign disorganized dermal overgrowth of collagen, elastin, and proteoglycans, sometimes syndromic (Buschke-Ollendorff, Proteus, tuberous sclerosis, MEN1), treated with steroids, excision, or monitoring.
Connective tissue type mast cell
The connective tissue type mast cell is a mast cell subtype whose granules contain both tryptase and chymase, found in skin, the peritoneal cavity, and intestinal submucosa.
Connectivity mapping
Connectivity mapping is a bioinformatics method that matches gene expression signatures against a reference database to find drugs or disease states with similar or opposite effects.
Connectome
Connectome: the complete map of neural connections in a nervous system, coined by Sporns and Hagmann in 2005. Studied at micro, meso, and macroscales via tractography and fMRI; central to the Human Connectome Project.
Connectomics
Connectomics: neuroscience field mapping complete neural wiring diagrams (connectomes), coined 2005 by Sporns and Hagmann; spans dMRI tractography in humans, EM datasets like FlyWire (139,255 fly neurons) and MICrONS, and the Human Connectome Project.
Connexin
Connexins are a family of transmembrane proteins forming gap junction channels between adjacent cells; humans express 21 connexins, and mutations in them cause genetic diseases.
Connie Celum
Connie Celum is an American infectious-diseases physician and epidemiologist at the University of Washington whose trials shaped HIV and STI prevention, including Partners PrEP and the DoxyPEP study.
Connie Eaves
Connie Eaves, also known as Connie J. Eaves, was a Canadian cancer and stem cell biologist who co-founded the Terry Fox Laboratory at BC Cancer in Vancouver.
Conocarpus
Conocarpus (button mangrove, Damas tree) is a two-species Combretaceae genus of mangrove-like trees native to tropical America and West Africa; C. erectus is salt-tolerant, widely introduced, and invasive in Pakistani cities.
Conoidea
Conoidea, formerly known as Toxoglossa, is a superfamily of venomous predatory marine gastropod snails that includes cone snails, auger snails, and turrid lineages, with more than 10,000 species.
Conopidae
Conopidae, the thick-headed flies, is a family of acalyptrate flies with over 800 species whose larvae are obligatory parasitoids, mostly of bees and wasps.
Conor Liston
Conor Liston is an American neuroscientist and psychiatrist, Professor of Psychiatry and Neuroscience at Weill Cornell Medical College, known for identifying neurophysiological subtypes of depression and salience-network expansion in the disorder.
Conotoxin
Conotoxins are small, disulfide-rich peptide neurotoxins produced by predatory marine cone snails, which act potently on ion channels and receptors, paralyzing prey and yielding the FDA-approved pain drug ziconotide.
Conotoxin Cl14.12
Conotoxin Cl14.12 (CUEC_CONCL) is a cysteine framework 14 (C-C-C-C) venom peptide from the California cone snail Californiconus californicus; sequence AACKAACK...DDDD, also detected in Rapana venosa larvae under let-7-y miRNA regulation.
Conotrachelus nenuphar
Conotrachelus nenuphar, the plum curculio or plum weevil, is a North American weevil pest of pome and stone fruits, marked by crescent oviposition scars, with univoltine northern and multivoltine southern strains; absent from the EU, where it is an A1 quarantine pest.
Conrad (raccoon)
Conrad was a dead raccoon found July 9, 2015, near 819 Yonge Street, Toronto, whose uncollected body sparked the #DeadRaccoonTO memorial, was named by councillor Norm Kelly, and got a Heritage Toronto plaque in 2025.
Conrad Elvehjem
Conrad Elvehjem (1901–1962) was an American biochemist in nutrition who identified nicotinic acid as the cure for pellagra and later served as president of the University of Wisconsin.
Conrad Murray
Conrad Murray, Grenadian-born former cardiologist and Michael Jackson's personal physician on the This Is It tour; convicted of involuntary manslaughter November 7, 2011 for administering propofol as a sleep aid; served two years of a four-year sentence, released 2013.
Conrad Wesselhoeft
Conrad Wesselhoeft (1884–1962) was an American physician who became Harvard's professor of communicable diseases, known for New England Journal of Medicine papers on rubella, congenital deformities, and scarlet fever.
Conscious sedation
Conscious sedation, now formally called moderate sedation/analgesia, is a drug-induced depression of consciousness in which the patient responds to verbal commands and maintains ventilation, used in most endoscopic procedures.
Consciousness
Consciousness, also called subjective or phenomenal experience, is the presence of first-person experience; studied via global workspace, IIT, and higher-order theories, with neural correlates and clinical disorders of consciousness.
Consciousness Monitors
Consciousness monitors, also called depth-of-anesthesia or brain function monitors (BIS, Entropy, PSI, Narcotrend), are EEG-based devices that assess a patient's level of consciousness during anesthesia, outputting a 0-100 index used to prevent intraoperative awareness and guide anesthetic titration.