| immunological | (adjective) of or relating to immunology | Synonyms: immunologic |
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| immunologically | (adverb) from the point of view of immunology | - |
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| immunologist | (noun) a medical scientist who specializes in immunology | - |
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| immunology | (noun) the branch of medical science that studies the body's immune system | - |
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| immunopathology | (noun) the branch of immunology that deals with pathologies of the immune system | - |
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| immunosuppressant | (noun) a drug that lowers the body's normal immune response | Synonyms: immune suppressant drug, immunosuppressive, immunosuppressive drug, immunosuppressor |
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| immunosuppressed | (adjective) of persons whose immune response is inadequate | - |
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| immunosuppression | (noun) lowering the body's normal immune response to invasion by foreign substances; can be deliberate (as in lowering the immune response to prevent rejection of a transplanted organ) or incidental (as a side effect of radiotherapy or chemotherapy for cancer) | - |
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| immunosuppressive | (adjective) of or relating to a substance that lowers the body's normal immune response and induces immunosuppression | - |
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| (noun) a drug that lowers the body's normal immune response | Synonyms: immune suppressant drug, immunosuppressant, immunosuppressive drug, immunosuppressor |
| immunosuppressor | (noun) a drug that lowers the body's normal immune response | Synonyms: immune suppressant drug, immunosuppressant, immunosuppressive, immunosuppressive drug |
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| immunotherapeutic | (adjective) of or relating to immunotherapy | - |
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| immunotherapy | (noun) therapy designed to produce immunity to a disease or to enhance resistance by the immune system | - |
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| impetiginous | (adjective) of or relating to or having impetigo | - |
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| inclinometer | (noun) a measuring instrument for measuring the angle of magnetic dip (as from an airplane) | Synonyms: dip circle |
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| (noun) an instrument showing the angle that an aircraft makes with the horizon | - |
| (noun) an instrument used by surveyors in order to measure an angle of inclination or elevation | Synonyms: clinometer |
| incognoscible | (adjective) incapable of being perceived or known | Synonyms: incognizable |
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| indigenous | (adjective) originating where it is found | Synonyms: autochthonal, autochthonic, autochthonous, endemic |
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| indigenously | (adverb) in an indigenous manner | - |
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| indigenousness | (noun) nativeness by virtue of originating or occurring naturally (as in a particular place) | Synonyms: autochthony, endemism |
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| inferno | (noun) a very intense and uncontrolled fire | Synonyms: conflagration |
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| (noun) any place of pain and turmoil | Synonyms: hell, hell on earth, hellhole, snake pit, the pits |
| inglenook | (noun) a corner by a fireplace | Synonyms: chimney corner |
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| innocence | (noun) the quality of innocent naivete | Synonyms: artlessness, ingenuousness, naturalness |
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| (noun) a state or condition of being innocent of a specific crime or offense | - |
| (noun) the state of being unsullied by sin or moral wrong; lacking a knowledge of evil | Synonyms: pureness, purity, sinlessness, whiteness |
| innocency | (noun) an innocent quality or thing or act | - |
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| innocense | (noun) white and lavender to pale-blue flowers grow in perfect rings of widely spaced bands around the stems forming a kind of pagoda; California | Synonyms: Collinsia bicolor, Collinsia heterophylla, purple chinese houses |
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| innocent | (adjective) free from evil or guilt | Synonyms: clean-handed, guiltless |
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| (adjective) lacking intent or capacity to injure | Synonyms: innocuous |
| (adjective) lacking in sophistication or worldliness | Synonyms: ingenuous |
| (adjective) completely wanting or lacking | Synonyms: barren, destitute, devoid, free |
| (adjective) (used of things) lacking sense or awareness | - |
| (adjective) not knowledgeable about something specified | Synonyms: unacquainted |
| (adjective) free from sin | Synonyms: impeccant, sinless |
| (noun) a person who lacks knowledge of evil | Synonyms: inexperienced person |
| innocently | (adverb) in a naively innocent manner | - |
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| (adverb) in a not unlawful manner | - |
| innocuous | (adjective) not injurious to physical or mental health | - |
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| (adjective) lacking intent or capacity to injure | Synonyms: innocent |
| (adjective) not causing disapproval | Synonyms: unobjectionable |
| innovate | (verb) bring something new to an environment | Synonyms: introduce |
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| innovation | (noun) the act of starting something for the first time; introducing something new | Synonyms: creation, foundation, founding, initiation, instauration, institution, introduction, origination |
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| (noun) a creation (a new device or process) resulting from study and experimentation | Synonyms: invention |
| (noun) the creation of something in the mind | Synonyms: conception, design, excogitation, invention |
| innovational | (adjective) being or producing something like nothing done or experienced or created before | Synonyms: groundbreaking, innovative |
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| innovative | (adjective) being or producing something like nothing done or experienced or created before | Synonyms: groundbreaking, innovational |
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| (adjective) ahead of the times | Synonyms: advanced, forward-looking, modern |
| innovativeness | (noun) originality by virtue of introducing new ideas | - |
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| innovator | (noun) someone who helps to open up a new line of research or technology or art | Synonyms: groundbreaker, pioneer, trailblazer |
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| innoxious | (adjective) having no adverse effect | - |
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| inoculant | (noun) a substance (a virus or toxin or immune serum) that is introduced into the body to produce or increase immunity to a particular disease | Synonyms: inoculum |
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| inoculate | (verb) perform vaccinations or produce immunity in by inoculation | Synonyms: immunise, immunize, vaccinate |
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| (verb) insert a bud for propagation | - |
| (verb) impregnate with the virus or germ of a disease in order to render immune | - |
| (verb) introduce a microorganism into | - |
| (verb) introduce an idea or attitude into the mind of | - |
| inoculating | (noun) the act of protecting against disease by introducing a vaccine into the body to induce immunity | Synonyms: vaccinating |
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| inoculation | (noun) taking a vaccine as a precaution against contracting a disease | Synonyms: vaccination |
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| inoculator | (noun) a medical practitioner who inoculates people against diseases | Synonyms: vaccinator |
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| inoculum | (noun) a substance (a virus or toxin or immune serum) that is introduced into the body to produce or increase immunity to a particular disease | Synonyms: inoculant |
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| inodorous | (adjective) having no odor | Synonyms: odorless, odourless |
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| inoffensive | (adjective) giving no offense | - |
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| (adjective) not causing anger or annoyance | Synonyms: unoffending |
| inoffensively | (adverb) in a not unpleasantly offensive manner | - |
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| inoperable | (adjective) not suitable for surgery | - |
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| (adjective) not able to perform its normal function | - |
| inoperative | (adjective) not working or taking effect | - |
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| inopportune | (adjective) not opportune | - |
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| inopportunely | (adverb) at an inconvenient time | Synonyms: malapropos |
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| inopportuneness | (noun) the quality of occurring at an inconvenient time | Synonyms: untimeliness |
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| inordinate | (adjective) beyond normal limits | Synonyms: excessive, undue, unreasonable |
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| inordinately | (adverb) to a surprising degree | Synonyms: extraordinarily |
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| inordinateness | (noun) immoderation as a consequence of going beyond sufficient or permitted limits | Synonyms: excess, excessiveness |
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| inorganic | (adjective) relating or belonging to the class of compounds not having a carbon basis | - |
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| (adjective) lacking the properties characteristic of living organisms | - |
| inorganically | (adverb) not involving carbon compounds | - |
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| inosculate | (verb) cause to join or open into each other by anastomosis | Synonyms: anastomose |
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| (verb) come together or open into each other | Synonyms: anastomose |
| inosculation | (noun) a natural or surgical joining of parts or branches of tubular structures so as to make or become continuous | Synonyms: anastomosis |
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| inosine | (noun) a nucleoside that is formed by the deamination of adenosine; used in kidney transplantation to provide a temporary source of sugar | - |
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| inositol | (noun) an optically inactive alcohol that is a component of the vitamin B complex | - |
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| interdenominational | (adjective) occurring between or among or common to different churches or denominations | Synonyms: interchurch |
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| internode | (noun) a segment of a stem between two nodes | - |
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| intervenor | (noun) (law) a party who interposes in a pending proceeding | - |
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| intravenous | (adjective) within or by means of a vein | Synonyms: endovenous |
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| intravenously | (adverb) in an intravenous manner | - |
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| ionophoresis | (noun) the motion of charged particles in a colloid under the influence of an electric field; particles with a positive charge go to the cathode and negative to the anode | Synonyms: cataphoresis, dielectrolysis, electrophoresis |
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| ionosphere | (noun) the outer region of the Earth's atmosphere; contains a high concentration of free electrons | - |
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| isoagglutinogen | (noun) an antigen capable of causing the production of (or reacting with) an isoagglutinin | - |
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| isochronous | (adjective) equal in duration or interval | Synonyms: isochronal |
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| isopropanol | (noun) alcohol used as antifreeze or a solvent | Synonyms: isopropyl alcohol |
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| isoproterenol | (noun) drug (trade name Isuprel) used to treat bronchial asthma and to stimulate the heart | Synonyms: Isuprel |
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| jalapeno | (noun) hot green or red pepper of southwestern United States and Mexico | Synonyms: jalapeno pepper |
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| (noun) plant bearing very hot and finely tapering long peppers; usually red | Synonyms: Capsicum annuum longum, cayenne, cayenne pepper, chili pepper, chilli pepper, long pepper |
| jejunoileitis | (noun) inflammation of the jejunum and the ileum of the small intestine | - |
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| jejunostomy | (noun) surgical creation of an opening between the jejunum and the anterior abdominal wall; will allow artificial feeding | - |
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| kainogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: caenogenesis, cainogenesis, cenogenesis, kenogenesis |
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| keno | (noun) a game in which numbered balls are drawn at random and players cover the corresponding numbers on their cards | Synonyms: beano, bingo, lotto |
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| kenogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: caenogenesis, cainogenesis, cenogenesis, kainogenesis |
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| kenosis | (noun) the concept of emptying one's own will and receive God's will, in Catholicism | - |
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| kenotron | (noun) a type of vacuum tube formerly used as a high-voltage rectifier. | - |
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| keratonosis | (noun) any abnormal condition of the outer skin (epidermis) | - |
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| keratonosus | (noun) any disease of the cornea | - |
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| keynote | (noun) a fundamental or central idea | - |
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| (noun) (music) the first note of a diatonic scale | Synonyms: tonic |
| (noun) the principal theme in a speech or literary work | - |
| (verb) set the keynote of | - |
| (verb) give the keynote address to (an audience) | - |
| kimono | (noun) a loose robe; imitated from robes originally worn by Japanese | - |
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| kino | (noun) East Indian tree yielding a resin or extract often used medicinally and in e.g. tanning | Synonyms: Pterocarpus marsupium |
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| (noun) a gum obtained from various tropical plants; used as an astringent and in tanning | Synonyms: gum kino, kino gum |
| kiwano | (noun) a fruit that has orange skin and lime green, jelly-like flesh with a refreshingly fruity taste, and texture similar to a passionfruit or pomegranate; grows on the annual vine Cucumis metuliferus. | - |
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| knob | (noun) a round handle | - |
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| (noun) a circular rounded projection or protuberance | Synonyms: boss |
| (noun) an ornament in the shape of a ball on the hilt of a sword or dagger | Synonyms: pommel |
| (noun) any thickened enlargement | Synonyms: node, thickening |
| knobbed | (adjective) used of old persons or old trees; covered with knobs or knots | Synonyms: gnarled, gnarly, knotted, knotty |
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| knobble | (noun) a small knob | - |
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| knobbly | (adjective) having knobs | Synonyms: knobby |
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| knobby | (adjective) having knobs | Synonyms: knobbly |
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| knobkerrie | (noun) a short wooden club with a heavy knob on one end; used by aborigines in southern Africa | Synonyms: knobkerry |
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| knobkerry | (noun) a short wooden club with a heavy knob on one end; used by aborigines in southern Africa | Synonyms: knobkerrie |
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| knock | (noun) the act of hitting vigorously | Synonyms: belt, rap, whack, whang |
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| (noun) negative criticism | Synonyms: roast |
| (noun) a vigorous blow | Synonyms: bang, bash, belt, smash |
| (noun) the sound of knocking (as on a door or in an engine or bearing) | Synonyms: knocking |
| (noun) a bad experience | - |
| (verb) find fault with; express criticism of; point out real or perceived flaws | Synonyms: criticise, criticize, pick apart |
| (verb) knock against with force or violence | Synonyms: bump |
| (verb) rap with the knuckles | - |
| (verb) deliver a sharp blow or push | Synonyms: strike hard |
| (verb) make light, repeated taps on a surface | Synonyms: pink, rap, tap |
| (verb) sound like a car engine that is firing too early | Synonyms: ping, pink |
| knockabout | (adjective) suitable for rough use | - |
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| (adjective) full of rough and exuberant animal spirits | Synonyms: boisterous |
| (noun) a sloop with a simplified rig and no bowsprit | - |
| knockdown | (adjective) (furniture) easily assembled and dismantled | - |
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| (noun) a blow that knocks the opponent off his feet | - |
| knocker | (noun) a device (usually metal and ornamental) attached by a hinge to a door | Synonyms: doorknocker, rapper |
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| (noun) either of two soft fleshy milk-secreting glandular organs on the chest of a woman | Synonyms: boob, bosom, breast, tit, titty |
| (noun) one who disparages or belittles the worth of something | Synonyms: depreciator, detractor, disparager |
| (noun) a person who knocks (as seeking to gain admittance) | - |
| (noun) (Yiddish) a big shot who knows it and acts that way; a boastful immoderate person | - |
| knocking | (noun) the sound of knocking (as on a door or in an engine or bearing) | Synonyms: knock |
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| knockoff | (noun) an unauthorized copy or imitation | Synonyms: clone |
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| knockout | (adjective) very strong or vigorous | Synonyms: hard, severe |
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| (noun) a blow that renders the opponent unconscious | Synonyms: kayo, KO |
| (noun) a very attractive or seductive looking woman | Synonyms: beauty, dish, looker, lulu, mantrap, peach, ravisher, smasher, stunner, sweetheart |
| knockwurst | (noun) short thick highly seasoned sausage | Synonyms: knackwurst |
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| knoll | (noun) a small natural hill | Synonyms: hammock, hillock, hummock, mound |
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| knot | (noun) a sandpiper that breeds in the Arctic and winters in the Southern Hemisphere | Synonyms: Calidris canutus, grayback, greyback |
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| (noun) any of various fastenings formed by looping and tying a rope (or cord) upon itself or to another rope or to another object | - |
| (noun) soft lump or unevenness in a yarn; either an imperfection or created by design | Synonyms: burl, slub |
| (noun) a tight cluster of people or things | - |
| (noun) something twisted and tight and swollen | Synonyms: gnarl |
| (noun) a hard cross-grained round piece of wood in a board where a branch emerged | - |
| (noun) (of ships and wind) a unit of speed equal to one nautical mile per hour or about 1.15 statute miles per hour | - |
| (verb) tie or fasten into a knot | - |
| (verb) tangle or complicate | Synonyms: ravel, tangle |
| (verb) make into knots; make knots out of | - |
| knotgrass | (noun) low-growing weedy grass with spikelets along the leaf stems | Synonyms: Paspalum distichum |
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| knothole | (noun) a hole in a board where a knot came out | - |
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