(n.) One of the elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray color and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356¡ Fahrenheit. It is sometimes found native, but usually combined with silver, cobalt, nickel, iron, antimony, or sulphur. Orpiment and realgar are two of its sulphur compounds, the first of which is the true arsenicum of the ancients. The element and its compounds are active poisons. Specific gravity from 5.7 to 5.9. Atomic weight 75. Symbol As.
(n.) Arsenious oxide or arsenious anhydride; -- called also arsenious acid, white arsenic, and ratsbane.
(a.) Pertaining to, or derived from, arsenic; -- said of those compounds of arsenic in which this element has its highest equivalence; as, arsenic acid.
Example Sentences:
(1) Each group was further divided into two groups; one was given the diet containing 100ppm of arsenic trioxide and the other a diet containing "arsenic compound" (100ppm as arsenic trioxide).
(2) An acute massive epidemic of arsenic poisoning in Argentina involved 718 subjects.
(3) However, there was unequivocal chronic arsenic intoxication.
(4) ARSENIC is a computerized system providing assistance for telephone consultation in poison centers.
(5) The concentrations of arsenic (As) and gallium (Ga) in solution and the As-GA ratio on the surface of the GaAs increased continuously as the time of contact with the aqueous solution increased.
(6) We studied the role of S-adenosylmethionine (SAM) as a methyl group donor in the methylation of inorganic arsenic in mammalians.
(7) The second tool is trivalent arsenical affinity chromatography, which we use to show novel direct interactions between trivalent arsenicals and several proteins from 3T3-L1 adipocytes including the insulin-responsive glucose transporter GLUT4, the insulin proreceptor, and both the alpha and beta subunits of tubulin.
(8) For both children and adults, the arsenic values were similar to those in a limited Danish reference population.
(9) This seems to be the first experimental confirmation of carcinogenicity of arsenic-containing pesticides used formerly in vineyards.
(10) Genotoxic evaluations of arsenic trioxide, dieldrin, lead tetraacetate and their nine binary and one tertiary mixtures were performed using the Tradescantia micronucleus (Trad-MN) assay.
(11) On the other hand, the major arsenic compound in fish, crustacea and molluscs has been identified as arsenobetaine, which is an arseno-analog of glycinebetaine, a very common osmo-regulator in living organisms.
(12) This study suggests that the much greater induction of morphological alterations, such as increased heterochromatin, in lung endothelial nuclei than in the liver might explain the high risk of lung cancer by arsenics, and that there may be a close relationship between heterochromatin alteration and DNA damages.
(13) Arsenic moves in a dispersive manner through air and water and is in physical and chemical equilibrium in many substrates.
(14) First-time measurements of the potentially toxic inorganic species of arsenic (arsenite and arsenate) have been obtained in fine (less than 2.5 microns AD) and coarse (greater than 2.5 microns AD) atmospheric particles in the Los Angeles area.
(15) Among various miscellaneous inhibitors, quercetin, disulfiram, and the Ca-complexing agents arsenazo I and III showed marked activity, the latter exclusively on the arsenical-resistant T. brucei.
(16) The patient has a history of occupational exposure to arsenic 42 years before.
(17) Meanwhile, the excess of respiratory cancers alone will continue to increase 5% for each microgram of arsenic present per m3 of air breathed in the work area, or excreted in every one-third liter of urine.
(18) Brazil dam burst: BHP boss to inspect disaster zone with dozens still missing Read more Brazil’s national water agency, ANA, has warned that the presence of arsenic, zinc, copper and mercury now present in the Rio Doce make the water untreatable for human consumption.
(19) When crab meat was ingested, none of these four arsenic species were observed at elevated levels until the urine was heated in 2N NaOH.
(20) The occurrence of chromosome aberrations was studied in short-term cultured lymphocytes from nine workers exposed to arsenic at the Rönnskär smeltery in northern Sweden.
Arsenite
Definition:
(n.) A salt formed by the union of arsenious acid with a base.
Example Sentences:
(1) The operon was found to have two functional regions, the promoter-proximal region encoding resistance to arsenite and antimonate and the promoter-distal region encoding arsenate resistance.
(2) of 90K, 68-72K, 41-47K, and 36 K. Arsenite-treated cells produced similar hsps including a 30k protein not produced by other forms of stress.
(3) Chinese hamster ovary (CHO) cells treated for either 1 h with 100 microM sodium arsenite (ARS) or 10 min at 45.5 degrees C became thermotolerant to a test heat treatment at 43 degrees C administered 6 or 12 h later, respectively.
(4) Arsenite-induced tolerant cells did not show an enhanced rate of recovery from the heat-induced intranuclear protein aggregation.
(5) Furthermore, we observed cross-resistance and self-tolerance with three seemingly unrelated stimuli (diamide, heat, and sodium arsenite).
(6) Micronuclei were induced starting from 0.7 microM arsenite.
(7) This effect implies that arsenite only slightly inhibited the incision of UV-induced DNA adducts.
(8) Iodoacetate and arsenite inhibited the enzyme to a smaller extent.
(9) The resistance pattern included arsenate, arsenite, and antimonate ions.
(10) Sodium arsenite had no effect on the survival of a recA mutant, WP10.
(11) First-time measurements of the potentially toxic inorganic species of arsenic (arsenite and arsenate) have been obtained in fine (less than 2.5 microns AD) and coarse (greater than 2.5 microns AD) atmospheric particles in the Los Angeles area.
(12) Also, the enzyme could be reactivated by arsenite and high concentrations of cyanide.
(13) Sodium arsenite was virtually ineffective as a convertogen but gave a positive result for reversion.
(14) We find that sodium arsenite inhibits only the DNA binding of those complexes that require factor.
(15) On the other hand, the coadministration of arsenite (5 ppm As) with the two higher levels of TMSe+ resulted in significant tumor suppression.
(16) l-1 sodium arsenite in drinking water for 2, 4, 8, 16 and 32 days.
(17) Post mortem reduction of arsenate to arsenite was found to occur rapidly in fish tissue.
(18) Se); this combination was nearly as effective as selenite, although either trimethylselenonium or arsenite alone was inactive.
(19) Arsenite forms a tight complex with these vicinal dithiols since the removal of loosely associated arsenite by gel exclusion chromatography did not reverse the inhibition of steroid binding.
(20) Inactivation of chicken liver xanthine dehydrogenase by arsenite is reflected in the molybdenum electron paramagnetic resonance signal at g = 1.97.