(n.) Amber; also, the alloy of gold and silver, called electrum.
Example Sentences:
(1) In addition, DDT blocked succinate dehydrogenase and the cytochrome b-c span of the electron transport chain, which also secondarily reduced ATP synthesis.
(2) Morphological alterations in the lungs of pheasants after prolonged high-dosage administration of bleomycin sulfate were studied by light and electron microscopy.
(3) It has been shown by LM and transmission electron microscopy that cells with blebs are viable and capable of mitotic activity.
(4) Serially sectioned rabbit foliate taste buds were examined with high voltage electron microscopy (HVEM) and computer-assisted, three-dimensional reconstruction.
(5) Electron spin resonance studies indicate the formation of two vanadyl complexes that are 1:1 in vanadyl and deferoxamine, but have two or three bound hydroxamate groups.
(6) Maximal covalent binding of [4,5-14C]ronidazole to DNA also required four-electron reduction, consistent with previous studies of the covalent binding of this agent to immobilized sulfhydryl groups [Kedderis et al.
(7) This is due to changes with energy in the relative backscattered electron fluence between chamber support and phantom materials.
(8) Ferrocene derivatives, in general, show a degree of versatility, coupling the electron-transfer reactions of many enzymes.
(9) Transmission electron microscopy demonstrated that these blebs were devoid of organelles and microvilli; scanning electron microscopy revealed that the blebs were highly wrinkled and more numerous than were the projections observed in tissue from animals treated with testosterone alone, or in tissue from unoperated controls.
(10) Immunogold electron microscopy demonstrated that outer dense fibres were the predominant immunoreactive site.
(11) Electron self-exchange has been measured by an NMR technique for horse-heart myoglobin.
(12) Using serial section electron microscopic reconstructions as a reference, we have chosen as our standard procedure a method that maximizes both the preservation of the cytoskeleton and the proportion of cells staining, while minimizing the degree of nonspecific staining.
(13) Histological and electron-microscopic study of the lungs of 15 patients who had been treated with bleomycin for advanced squamous cell carcinoma demonstrated marked histological changes in nine.
(14) Adenomata taken from 25 patients with primary aldosteronism were observed by electron microscopy.
(15) Digestion of cytoplasmic components of horny cells was observed by electron microscopy, but both cell membranes and desmosomes remained intact.
(16) The amount of intracellular, iodophilic, glycogen-like polysaccharide (IPS) present in cells of two strains of Streptococcus mutans at various stages of growth in a chemically defined medium was determined by quantitative electron microscopy.
(17) Electron microscopic immunohistochemistry revealed histamine-immunostaining in granules in a small number of nerve fibers and varicosities.
(18) Electron microscopic observations of the masseter nerve in the aged cats revealed a disruption of the myelin sheaths and a pronounced increase in collagen fibers in the endoneurium and perineurium.
(19) Dose distributions were evaluated under thin sheet lead used as surface bolus for 4- and 10-MV photons and 6- and 9-MeV electrons using a parallel-plate ion chamber and film.
(20) Widely varying numbers of endocrine cells were identified in 12 out of 64 cases of uterine cancer in the course of histochemical and electron microscopic examination.
Zinc
Definition:
(n.) An abundant element of the magnesium-cadmium group, extracted principally from the minerals zinc blende, smithsonite, calamine, and franklinite, as an easily fusible bluish white metal, which is malleable, especially when heated. It is not easily oxidized in moist air, and hence is used for sheeting, coating galvanized iron, etc. It is used in making brass, britannia, and other alloys, and is also largely consumed in electric batteries. Symbol Zn. Atomic weight 64.9.
(v. t.) To coat with zinc; to galvanize.
Example Sentences:
(1) Zinc in plasma and urine and serum albumin and alpha 2-macroglobulin were measured in 48 patients with burns.
(2) Adult nonpregnant female rhesus monkeys fed purified diets containing 100 or 4 ppm zinc for 1 yr were mated then studied through midgestation.
(3) Cellular aging is accompanied by increased cellular permeability to zinc(II).
(4) Cytosolic zinc was eluted from a Sephadex G-75 column in the molecular weight region associated with metallothionein.
(5) Serum levels of vitamins A and E, zinc and iron were determined in healthy control subjects and lepromatous leprosy patients belonging to an eastern state of India.
(6) Zinc alpha-2 glycoprotein (ZnGP) was measured in human breast microcysts, breast secretions, breast cyst fluid and serum.
(7) The absorption of zinc from meals based on 60 g of rye, barley, oatmeal, triticale or whole wheat was studied by use of extrinsic labelling with 65Zn and measurement of the whole-body retention of the radionuclide.
(8) In cirrhosis there was a decrease, of zinc (-40%) albumin (-38%) and of activity of ALA D (-48%) and an increase in blood lead (+80%).
(9) The plasma zinc level was significantly lower at the time of onset of zinc deficiency than in normal subjects, before the procedure of TPN, or at the time of symptomatic relief achieved by administration of zinc.
(10) In comparison with animals fed zinc-containing diets, mice fed zinc-deficient diets had reduced numbers of T cells and T-cell subsets, reduced proliferation to mitogens and specific antigen, and a decreased production of interleukin 2 (IL-2), but the number and affinity of IL-2 receptors were not affected.
(11) The contents of magnesium, potassium and zinc plasma did not correlate with the corresponding concentrations in skeletal muscle or circulating blood cells, as investigated in healthy controls, diabetics and in all subjects together, implying that the plasma concentrations are not useful in the assessment of electrolyte status.
(12) A positive association was observed between the prevalence of fatigue, mild abdominal pain, and arthralgia and the blood lead (PbB), urinary lead (PbU), and zinc protoporphyrin (ZPP) levels.
(13) Perinatal brain damage produced by early zinc deficiency followed by rehabilitation with adequate zinc appears to be long term, maybe permanent.
(14) The results of these investigations suggest that there is a biochemically significant decrease in the bioavailability of zinc when these artificial formulas are used.
(15) Each repeat unit contains thirty amino acids and is thought to bind a zinc atom using two cysteines and two histidines as ligands.
(16) The same ratio occurred when zinc (0 to 0.6 mM in citrate buffer) was added to semen or washed spermatozoa.
(17) In the present study, maternal and fetal zinc (Zn), copper (Cu), manganese (Mn), iron (Fe), magnesium (Mg), and calcium (Ca) status has been studied in Sprague-Dawley (SD) and Wistar rats.
(18) Iron, zinc, cadmium, cobalt, and lead do not interfere.
(19) The addition of zinc to the cell culture medium then led to the expression of hepatitis D antigen associated with, in the short term, a significant reduction in the rate of RNA but not DNA synthesis and, in the longer term, cell death.
(20) In order to determine the specific action of cadmium on bone metabolism, the effect of cadmium on alkaline phosphatase activity, a marker enzyme of osteoblasts, was compared with that of other divalent heavy metal ions, i.e., zinc, manganese, lead, copper, nickel and mercury (10 microM each), using cloned osteoblast-like cells, MC3T3-E1.