(a.) Sour, sharp, or biting to the taste; tart; having the taste of vinegar: as, acid fruits or liquors. Also fig.: Sour-tempered.
(a.) Of or pertaining to an acid; as, acid reaction.
(n.) A sour substance.
(n.) One of a class of compounds, generally but not always distinguished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, united with a more negative element or radical, either alone, or more generally with oxygen, and take their names from this negative element or radical. Those which contain no oxygen are sometimes called hydracids in distinction from the others which are called oxygen acids or oxacids.
Example Sentences:
(1) The amino acid sequence deduced from the nucleotide sequence contained both amino- and carboxyl-terminal sequences.
(2) F(420) is photolabile aerobically in neutral and basic solutions, whereas the acid-stable chromophore is not photolabile under these conditions.
(3) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
(4) If ascorbic acid was omitted from the culture medium, the extensive new connective tissue matrix was not produced.
(5) The interaction of the antibody with both the bacterial and the tissue derived polysialic acids suggests that the conformational epitope critical for the interaction is formed by both classes of compounds.
(6) Arachidic acid was without effect, while linoleic acid and linolenic acid were (on a concentration basis) at least 5-times less active than arachidonic acid.
(7) An unsaturated fatty acid auxotroph of Escherichia coli was grown with a series of cis-octadecenoate isomers in which the location of the double bond varied from positions 3 to 17.
(8) The ability of azelastine to influence antigen-induced contractile responses (Schultz-Dale phenomenon) in isolated tracheal segments of the guinea-pig was investigated and compared with selected antiallergic drugs and inhibitors of arachidonic acid metabolism.
(9) After 4 to 6 hours of recirculation, accumulation of vasoactive amine, 5-hydroxytryptamine, its major metabolite, 5-hydroxyindole acetic acid, and its precursor amino acid, tryptophan were detected.
(10) Spectrophotometric determination of the sulfhydryl content in the animal tissue before (control) and after using 6,6'-Dithiodinicotinic acid is applied.
(11) This death is also dependent on the presence of chloride and is prevented with the non-selective EAA antagonist, kynurenic acid, but is not prevented by QA.
(12) However, four of ten young adult outer arm (relatively sun-exposed) and one of ten young adult inner arm (relatively sun-protected) fibroblasts lines increased their saturation density in response to retinoic acid.
(13) Microionophoretically applied excitatory amino acids induced firing of extracellularly recorded single units in a tissue slice preparation of the mouse cochlear nucleus, and the similarly applied antagonist 2-amino-5-phosphonovalerate (2APV) was demonstrated to be a selective N-methyl-D-aspartate (NMDA) receptor antagonist.
(14) The LD50 of the following metal-binding chelating drugs, EDTA, diethylenetriaminepentaacetic acid (DTPA), hydroxyethylenediaminetriacetic acid (HEDTA), cyclohexanediaminotetraacetic acid (CDTA) and triethylenetetraminehexaacetic acid (TTHA) was evaluated in terms of mortality in rats after intraperitoneal administration and was found to be in the order: CDTA greater than EDTA greater than DTPA greater than TTHA greater than HEDTA.
(15) Estimations of the degree of incorporation of 14C from the radioactive labeled carbohydrate into the glycerol and fatty acid moieties were carried out.
(16) The second amino acid residue influences not only the rate of reaction but also the extent of formation of the product of the Amadori rearrangement, the ketoamine.
(17) Leumorphin is a 29-amino-acid peptide derived from preproenkephalin B. Intracerebroventricular (i.c.v.)
(18) Hepatic lymph flow increased only after ethacrynic acid and mannitol administration.
(19) The subcellular distribution of sialyltransferase and its product of action, sialic acid, was investigated in the undifferentiated cells of the rat intestinal crypts and compared with the pattern observed in the differentiated cells present in the surface epithelium.
(20) A phytochemical investigation of an ethanolic extract of the whole plant of Echites hirsuta (Apocynaceae) resulted in the isolation and identification of the flavonoids naringenin, aromadendrin (dihydrokaempferol), and kaempferol; the coumarin fraxetin; the triterpene ursolic acid; and the sterol glycoside sitosteryl glucoside.
Prick
Definition:
(v.) That which pricks, penetrates, or punctures; a sharp and slender thing; a pointed instrument; a goad; a spur, etc.; a point; a skewer.
(v.) The act of pricking, or the sensation of being pricked; a sharp, stinging pain; figuratively, remorse.
(v.) A mark made by a pointed instrument; a puncture; a point.
(v.) A point or mark on the dial, noting the hour.
(v.) The point on a target at which an archer aims; the mark; the pin.
(v.) A mark denoting degree; degree; pitch.
(v.) A mathematical point; -- regularly used in old English translations of Euclid.
(v.) The footprint of a hare.
(v.) A small roll; as, a prick of spun yarn; a prick of tobacco.
(n.) To pierce slightly with a sharp-pointed instrument or substance; to make a puncture in, or to make by puncturing; to drive a fine point into; as, to prick one with a pin, needle, etc.; to prick a card; to prick holes in paper.
(n.) To fix by the point; to attach or hang by puncturing; as, to prick a knife into a board.
(n.) To mark or denote by a puncture; to designate by pricking; to choose; to mark; -- sometimes with off.
(n.) To mark the outline of by puncturing; to trace or form by pricking; to mark by punctured dots; as, to prick a pattern for embroidery; to prick the notes of a musical composition.
(n.) To ride or guide with spurs; to spur; to goad; to incite; to urge on; -- sometimes with on, or off.
(n.) To affect with sharp pain; to sting, as with remorse.
(n.) To make sharp; to erect into a point; to raise, as something pointed; -- said especially of the ears of an animal, as a horse or dog; and usually followed by up; -- hence, to prick up the ears, to listen sharply; to have the attention and interest strongly engaged.
(n.) To render acid or pungent.
(n.) To dress; to prink; -- usually with up.
(n.) To run a middle seam through, as the cloth of a sail.
(n.) To trace on a chart, as a ship's course.
(n.) To drive a nail into (a horse's foot), so as to cause lameness.
(n.) To nick.
(v. i.) To be punctured; to suffer or feel a sharp pain, as by puncture; as, a sore finger pricks.
(v. i.) To spur onward; to ride on horseback.
(v. i.) To become sharp or acid; to turn sour, as wine.
(v. i.) To aim at a point or mark.
Example Sentences:
(1) These results have implications in utilizing codeine phosphate as a positive skin prick test control for allergy testing.
(2) The diagnosis of occupational allergy was based on history, skin prick tests and RAST to the pollen.
(3) Prick tests performed on 16 different condom brands showed that 4 brands caused positive reactions in 52-67% of patients.
(4) One hundred and forty-four had non-allergic and 69 allergic asthma verified retrospectively by positive skin prick test in 1988.
(5) The results of this investigation are clearly in contrast to earlier earlier reports, in that there was a very good correlation between prick test, RAST and case history.
(6) The prick tests, using both commercial allergens and specific extracts prepared from the most common types of coffee and their corresponding sacks, confirmed a sensitization in 21 workers (9.6%).
(7) There were statistically significant exposure-response relations between exposure and symptoms from eyes and upper airways, dry cough, positive skin prick test, and specific IgE and IgG antibodies.
(8) The effect of 4.4 mg azelastine administered orally on airway responsiveness, skin prick testing, daily peak expiratory flow rates and symptoms of asthma was compared with placebo in a 7 week double-blind, parallel group study of 24 patients with extrinsic asthma.
(9) Subjective pain ratings of mucosal pin-prick decreased a surprisingly small degree after application of both solutions.
(10) Having said that, though, the man is clearly a bit of a prick and one with a serial addiction to publicity."
(11) In allergologic out-patient departments of Dubrovnik, Split, Sibenik, Zadar, Pula and Rijeka, 300 patients with pollinosis have been tested by the application of the prick method of group allergens of grass, tree and weed pollen, particularly of Parietariae (pellitory) pollen.
(12) In comparison with conventional allergen preparations immunologically characterized allergens were tested by skin-prick-tests for reactions.
(13) Exclusion of asthmatics and taking into account smoking and skin prick test positivity yielded mostly similar results.
(14) The results of the Phadezym-RAST and IgE-Quick correlated very well (r = 0.96) and both in-vitro methods corresponded to the Skin-Prick-Test (greater than 90%).
(15) Throughout history there have been periods of wild exuberance followed by the pricking of bubbles.
(16) By skin prick testing comparable results were obtained with both extracts.
(17) In both groups of patients, there was a low incidence of the causes of post-cordotomy pain recurrence contralateral to the lesion, i.e., deafferentation pain, fading of analgesia, and pain above the levels up to which deep pin-prick analgesia had been obtained.
(18) In making a computerized cephalometric analysis, first the film should be traced, and the landmarks pricked and manually digitalized into an X-Y coordinate system.
(19) Sections of eggs, fixed 20 to 60 s following fertilization or pricking, show that the tubular cisternae have disappeared and the clusters of cisternae have opened to give rise to longer cisternae arranged in chains.
(20) Bronchial responsiveness to histamine and skin prick test reactions to airborne allergens were measured in a random population sample of 891 adults and 1293 schoolchildren.