72,234 articles
Clement Markert
Clement Markert (1917–1999) was an American developmental biologist and geneticist credited with discovering isozymes, the multiple molecular forms of a single enzyme; he later chaired biology at Yale.
Clementine
Clementine (Citrus clementina), a small seedless mandarin hybrid from Misserghin near Oran, Algeria, found by Father Clément Rodier and described by Trabut in 1902; mandarin x sweet orange, propagated by grafting, Mediterranean staple.
Clemmys
Clemmys, genus of emydid turtles named by Ritgen 1828, now monotypic containing only the spotted turtle Clemmys guttata (Schneider 1792); wood and bog turtles moved to Glyptemys, western pond turtle to Actinemys.
Cleridae
Cleridae, checkered beetles (Latreille, 1802), a cosmopolitan family of predatory beetles in Cleroidea, ~3700-4000 species, diagnosed by a postgular plate, oldest fossils Middle Jurassic China.
Clerodendrum
Clerodendrum (glorybower, bagflower, bleeding-heart) is a Lamiaceae genus of about 250 species of trees, shrubs, and lianas of the Old World tropics, with tubular flowers and accrescent fruiting calyces.
Clesrovimab
Clesrovimab (Enflonsia, MK-1654), Merck's long-acting anti-RSV monoclonal antibody; single 105 mg intramuscular dose for infants under 8 months in their first RSV season; FDA approved June 9, 2025; alternative to nirsevimab.
Clethodim
Clethodim (CAS 99129-21-2) is a cyclohexanedione oxime, ACCase-inhibiting (WSSA Group 1) post-emergence herbicide that selectively kills grasses in broadleaf crops; EU-approved, short soil half-life of 1 to 3 days.
Clethra
Clethra (sweet pepperbush, summersweet) is a genus of about 65-86 shrub and small tree species in Clethraceae, Ericales, native disjunctly to the Americas, Madeira, and tropical-subtropical Asia, with fragrant summer racemes and vicariance-driven biogeography.
CLEVECORD
CLEVECORD (HPC, Cord Blood) is an FDA-licensed allogeneic umbilical cord blood stem cell product, BLA 125594, approved September 1, 2016 and manufactured by the nonprofit Cleveland Cord Blood Center for unrelated donor transplantation.
Cleveland Clinic
Cleveland Clinic, also known as Cleveland Clinic Foundation, is a nonprofit academic medical center in Cleveland, Ohio, founded in 1921 as a group practice and now a global health system with more than 65,000 caregivers.
Clever Hans
Clever Hans (Kluge Hans) was a horse in early twentieth-century Berlin, exhibited by Wilhelm von Osten, that seemed to count, do arithmetic, and read by tapping a hoof.
Clevidipine
Clevidipine (Cleviprex) is an ultrashort-acting intravenous dihydropyridine calcium channel blocker in lipid emulsion, FDA approved 2008 for blood pressure reduction when oral therapy is not feasible; esterase metabolism gives a ~1-minute half-life, and ECLIPSE trials compared it with nitroglycerin, nitroprusside, and nicardipine.
Clevudine
Clevudine (L-FMAU; brands Levovir, Revovir) is a pyrimidine nucleoside analogue inhibiting HBV reverse transcriptase, approved in South Korea in 2006, notable for prolonged post-treatment suppression but limited by mitochondrial myopathy and resistance versus entecavir.
Cleyera japonica
Cleyera japonica (sakaki, サカキ), Japanese cleyera, an evergreen Pentaphylacaceae shrub or small tree from Himalaya to East Asia; sacred in Shinto, IUCN Least Concern, with fragrant white flowers and red-to-black berries.
CLIC1
CLIC1 (chloride intracellular channel 1, formerly NCC27) is a human metamorphic protein, gene ID 1192, existing as a soluble glutathione-S-transferase-like enzyme and a membrane-inserted anion channel form; studied in cancer, microglia, and obesity.
Click beetle
Elateridae, the click beetles, are the largest family of Elateroidea beetles, over 10,000 species, defined by a thoracic click-hinge jump; larvae are wireworm crop pests, some tropical species bioluminesce.
Click Therapeutics
Click Therapeutics is a New York City company developing prescription digital therapeutics, regulated software prescribed as medical treatment, and is known for Rejoyn, an app for depression symptoms.
Click-to-release antibody–drug conjugates
Click-to-release antibody–drug conjugates, or click-cleavable ADCs, are ADCs whose payload is released extracellularly by a separate tetrazine trigger, extending therapy to non-internalizing targets; introduced in 2013.
Clidinium
Clidinium (clidinium bromide, brand Quarzan) is a synthetic anticholinergic muscarinic M1/M3 antagonist that reduces stomach acid and bowel spasms; combined with chlordiazepoxide as Librax (FDA approved 1966) for peptic ulcer, IBS, and enterocolitis.
Cliff Tabin
Cliff Tabin, also known as Clifford J. Tabin, is an American developmental geneticist who has chaired Harvard Medical School's genetics department since 2007 and identified Sonic hedgehog as the limb bud's patterning signal.
Clifford A. Hudis
Clifford A. Hudis is an American medical oncologist who led breast cancer care at Memorial Sloan Kettering and has been chief executive of ASCO since 2016.
Clifford B. Saper
Clifford B. Saper is an American neuroscientist and neurologist, the James Jackson Putnam Professor at Harvard Medical School, known for defining the brain circuits that regulate sleep, body temperature, and circadian timing.
Clifford Grobstein
Clifford Grobstein (1916–1998) was an American developmental biologist who showed how embryonic tissues direct one another's growth and later shaped bioethics debates on fetal research.
Clifford J. Rosen
Clifford J. Rosen, also published as Clifford Rosen, is an American endocrinologist at MaineHealth Institute for Research in Portland, Maine, and a Tufts professor known for osteoporosis trials.
Clifford J. Tabin
Clifford J. Tabin is an American developmental geneticist, professor of genetics at Harvard Medical School, known for work on Sonic hedgehog, left-right asymmetry, and Darwin's finches.
Clifford J. Woolf
Clifford J. Woolf is a South African-born neuroscientist who discovered central sensitization, the amplification of pain signaling in the central nervous system, and is a Harvard Medical School professor of neurology.
Clifford Ladd Prosser
Clifford Ladd Prosser (1907–2002) was an American comparative physiologist at the University of Illinois, often called the father of modern comparative physiology and author of Comparative Animal Physiology.
Clifford P. Brangwynne
Clifford P. Brangwynne is a Princeton University biophysicist who showed that membrane-less cell structures form by liquid-liquid phase separation, and won the 2023 Breakthrough Prize in Life Sciences.
Clifford P. Stanners
Clifford Paul Stanners is a Canadian biochemist and McGill University professor whose research on carcinoembryonic antigen (CEA) showed it functions as an intercellular adhesion molecule.
Clifford R. Jack
Clifford R. Jack is a neuroradiologist and Alzheimer's researcher at Mayo Clinic in Rochester, Minnesota, known for the 2009 dynamic biomarkers model and the 2016 A/T/N classification.