(a.) Of or pertaining to tin; derived from or containing tin; specifically, designating those compounds in which the element has a higher valence as contrasted with stannous compounds.
Example Sentences:
(1) At any pH below 9, the two sols stained proteins in the outer hydrophilic leaflet of esterified cells with relative selectivity, but the alpha-stannic acid showed them more accurately.
(2) The stannic porphyrins, in particular tin protoporphyrin and tin mesoporphyrin, have been proposed for this purpose because these compounds competitively inhibit heme oxygenase, the rate-limiting enzyme in the heme-degrading pathway.
(3) Colloidal alpha-stannic acid and a negative iron colloid obtained from ferric hydroxide and potassium ferrocyanide, both negative sols being stable within a wide pH range, were refined as surface protein electron markers.
(4) The tested doses were 20 micrograms and 10 micrograms of stannic chloride and 1 microgram and 0.5 microgram of trimethyltin chloride.
(5) The results indicate that the favorable half-life and decay characteristics of tin-117m in various stannic compounds, especially stannic-DTPA, make it potentially useful as an agent for skeletal scintigraphy and radiotherapy of bone tumors.
(6) Stannous or stannic chlorides reduced the growth rate of K. aerogenes, Ps.
(7) Several alkyl substituted 1-beta-D-ribofuranosyl-1,2-dihydropyrimidin-2-one derivatives were synthesized by the method of stannic chloride-catalyzed glycosidation method to elucidate their inhibitory activity of cytidine deaminase and also their antitumor activities in vitro and in vivo.
(8) For stannic chelates, higher bone uptake, faster blood clearance, and reduced soft-tissue concentration were observed.
(9) 1-beta-D-Ribofuranosyl-5-methylimidazole-4-carboxamide was obtained by deacetylation of the corresponding tri-O-acetyl nucleoside 11 or by deacetylation and ammonolysis of the blocked ethyl 5-methylimidazole-4-carboxylate nucleoside 10, which was prepared from the stannic chloride catalyzed condensation of the trimethylsilyl derivative of ethyl 4(5)-methylimidazole-5(4)-carboxylate.
(10) The maximum concentrations which reduced the replicative index by about 50%, of stannic chloride and trimethyltin chloride were 40 micrograms and 2 micrograms per culture respectively.
(11) Individuals responsible for occupational health should be aware that relatively benign substances, such as stannic chloride and water, can combine spontaneously to form hazardous substances.
(12) The industrial hygiene survey, conducted when stannic chloride use had been reduced, cleaning had been done, and ventilation improved, focused on measuring air contaminants that might possibly cause symptoms.
(13) Direct glycosylation of the trimethylsilyl derivative of 8 with 1-O-acetyl-2,3,5-tri-O-benzoyl-beta-D-ribofuranose in the presence of stannic chloride, followed by debenzoylation, gave the guanosine analogue 2-amino-8-(beta-D-ribofuranosyl)imidazo[1,2-a]-s-triazin-4-one (12b), which on deamination gave the xanthosine analogue 13.
(14) Vanadate at 2 mM, 2 microM carbonyl cyanide 4-(trifluoromethoxy)phenylhydrazone (a metabolic uncoupler), or 2 microM stannic chloride all markedly enhanced lead entry into brain, as did a more alkaline pH (7.80).
(15) Reaction of the trimethylsilyl derivative of 2,3-dihydro-6H-1,3-oxazine-2,6-dione (2, "uracil anhydride") with protected 1-O-acetylribofuranoses in the presence of stannic chloride gave the corresponding block nucleosides.
(16) Compound 6 was obtained by reaction of 7-nitroimidazo-[4,5-b]pyridine with 1,2,3,5-tetra-O-acetyl-beta-D-ribofuranose in the presence of stannic chloride followed by treatment with methanolic ammonia.
(17) It has been shown that oxygen interferes with the reduction process by oxidizing stannous ion, Sn(II), to stannic, Sn(IV), thereby leaving less Sn(II) available for the reduction of pertechnetate ion.
(18) Barium sulfate, calcium carbonate, cupric oxide, ferric oxide, heavy magnesium oxide, and stannic oxide merited more detailed study.
(19) Acyclonucleoside esters 6-8 were prepared by the stannic chloride catalyzed reaction of methyl chloro[2-(phenylmethoxy)ethoxy]acetate (5) with various silylated pyrimidines, generated in situ from the bases and bis(trimethylsilyl)acetamide.
(20) The condensation of per(trimethyl)silylbarbital and -phenobarbital with 1,2,3,4,6-penta-O-acetyl-beta-D-glucopyranose in the presence of stannic chloride in dichloroethane gave moderate yields of the beta-coupled barbiturate N-D-glucopyranosyl derivatives.
Tannic
Definition:
(a.) Of or pertaining to tan; derived from, or resembling, tan; as, tannic acid.
Example Sentences:
(1) In normal kidneys fixed by perfusion with tannic acid and glutaraldehyde, glomerular slit diaphragms have been reported to consist of highly ordered and isoporous substructures with a zipper-like configuration.
(2) Tannic acid-treated sheep erythrocytes were sensitized with sonicated antigen prepared from M bovis cultures.
(3) Ultrarapid freezing, followed by delicate freeze-substitution, immobilizes and retains much more ECM than chemical fixatives that include tannic acid (TA).
(4) Colloidal gold particles of different size (3-20 nm in diameter) were prepared by tannic acid-citrate and citrate reduction methods.
(5) After fixing, some specimens were embedded in resin and prepared in ultra thin sections before being triple stained with tannic acid-ethanol uranium-lead.
(6) In the aleurone cells, the cytoplasm and the outer portion of the wall are autofluorescent; tannic acid-ferric chloride stains the outer portion of the wall and allows to see clearly the inner thickenings, DAPI and haematoxylin demonstrate the presence of the nucleus.
(7) Within 4-6 h following tannic acid injection, rat hepatocytes transplanted into the anterior chamber of eye and inguinal fat pads of rat and athymic nude mouse, showed changes of nucleolar components, with separation of ribonucleoprotein containing granules into discrete dark zones.
(8) It is concluded from morphological studies, as well as previous tracer studies, that tannic acid, at least to a great extent, prevents the extraction of phosphatidylcholine.
(9) In rigor control, crossbridges were most regular in muscles that were stabilized before freezing by prefixation in glutaraldehyde followed by 'hardening' with neutralized tannic acid, so all nucleotide treatments were terminated by such fixation.
(10) The detection of luminar glycocalyx of pancreatic acinar and ductular cells succeeded by injections of different markers, such as ruthenium red, lanthanum hydroxide, tannic acid, colloidal iron or ferritin in the pancreatic duct system.
(11) Tannic acid and dextran have been used to arrest the exocytosis of secretory granules in the atria of the rat heart.
(12) With glutaraldehyde-tannic acid fixation, the basal lamina of the otic pit cells shows differences from that of the normal otic pit.
(13) Infusion of tannic acid in high-K+ saline enabled sites of granule exocytosis to be visualized.
(14) The modifying effects of the naturally occurring antioxidants gamma-oryzanol, phytic acid, tannic acid and n-tritriacontane-16, 18-dione (TTAD) were investigated in a rat wide-spectrum organ carcinogenesis model.
(15) Higher concentrations of tannic acid improved the sensitivity of the cells but required an increased concentration of stabilizing serum to prevent autoagglutination.
(16) The present report indicates that tannic acid and morin are effective in reducing plasma and liver lipids when supplemented with a high fat diet in rats.
(17) Various nerves of 6 representative species of mammals (including the human) were studied by the comparative association of the selective staining methods of light microscopy with the ultrastructural observation after tannic acid-glutaraldehyde fixation, which provided a reliable means of characterizing the different elastic system fibers.
(18) After aldehyde-tannic fixation, Zinc-iodine-osmium fixation, Phospho Tungstic acid-chromium stain and two cytochemical reactions, the ultrastructure of the Golgi complex of early spermatids in the guinea pig reveals two different regions.
(19) No exchange of eosin Y or diC18Icc from YAC cells into bound tannic acid-treated erythrocytes was found.
(20) Axonemes from the heterosporous water fern Marsilea vestita were fixed in the presence of tannic acid and examined by thin-section electron microscopy.