(a.) Containing a high percentage of silica; -- opposed to basic.
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.
Acidific
Definition:
(a.) Producing acidity; converting into an acid.
Example Sentences:
(1) The effect of intraduodenal acidification or intravenous bolus injections of secretin on plasma insulin concentrations during infusions of glucose was also examined.
(2) Truncal vagotomy resulted in a significant decrease of gastric acid response to the meal at all pH levels or at all doses of secretin but the inhibitory effect of gastric acidification or secretin on serum gastrin and gastric acid response to a meal remained unchanged.
(3) Histamine-stimulated acid output was determined before and during duodenal acidification.
(4) Serum SIRS-inducing activity was abrogated by treatment with proteinase K or boiling, but was not affected by dialysis, acidification to pH 2, or heating to 56 degrees C. This serum factor could be distinguished functionally and antigenically from SIRS and from interferon (IFN) alpha or IFN gamma.
(5) To avoid the destructive effect of acidification during affinity chromatographic elution, pepstatin-aminobutyl-agarose gel was used from which renin could be eluted at a neutral pH in 2 M urea.
(6) Equivalent neutralising doses of magnesium hydroxide (pH 9-4) did not increase serum gastrin and gastric acid output above basal levels, whereas antral acidification with 20 ml 0-1 N HCl resulted in a slight decrease in serum gastrin.
(7) Intracellular acidification (produced by raised extracellular CO2 concentration) largely reproduced the contractile changes observed during fatigue.
(8) Therefore, we tested the hypothesis that acidification of the proximal small bowel would alter SO motility.
(9) La Crosse virus, a member of the family Bunyaviridae, can mediate cell-to-cell fusion after mild acidification.
(10) As with other elements, the interest here is the potential effect of environmental acidification on environmental behavior in ways that are relevant to human exposure to these metalloids.
(11) In accord with this explanation cytoplasmic acidification by bicarbonate was antagonised by acetazolamide (an inhibitor of carbonic anhydrase).
(12) The effect of lithium chloride administration on urinary acidification was studied in dogs.
(13) When the endosomes were incubated in a chloride-containing buffer, degradation was greatly inhibited, and acidification did not occur.
(14) Acute acid loading stimulates endogenous PTH secretion, which, by enhancing urinary acidification, constitutes a homeostatic response of the parathyroid glands.
(15) Acidification is therefore necessary to establish the probability of translocation, but it is not directly involved in the actual translocation of these toxins.
(16) The pathophysiological mechanism of production appears to be the accumulation of acid ions caused by pH acidification of the cerebrospinal fluid.
(17) These results indicate that the candidacidal activity of gamma interferon-activated PMPs correlates well with enhanced acidification of their phagolysosomes and suggest that the candidacidal activity of activated PMPs is independent from reactive oxygen molecules and is mediated by proteinaceous substance(s) generated only in a strong acidic milieu of phagolysosomes by activation.
(18) Acidification of a meal stimulates somatostatin release in dogs.
(19) The acidification did not interfere in leukocyte migration under agar.
(20) Gastrin I did not significantly increase pyloric pressure but did antagonize the pyloric response to duodenal acidification.