Results 221 to 230 of about 132,391 (265)

Nitroblue Tetrazolium Reduction in Lymphocytes

Journal of Leukocyte Biology, 1987
Abstract Certain populations of lymphocytes have been shown to reduce tetrazolium salts, indicating that superoxide anion may be present in lymphocytes. These experiments were done to determine if nitroblue tetrazolium reduction by lymphocytes was due to the presence of superoxide anion.
M, Melinn, H, McLaughlin
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The Nitroblue Tetrazolium Test in Lymphoma

American Journal of Clinical Pathology, 1973
The nitroblue tetrazolium (NBT) dye test was performed in 25 cases of lymphoma. Four of six patients with active, untreated lymphoma and with no evidence of bacterial infection had positive NBT tests (more than 10% of neutrophils reduced the dye to formazan). One of these four patients had occasional negative tests.
E M, Silverman, R E, Reed
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The synthesis of yellow tetrazolium

Histochemie, 1969
The syntheses of 4,4′-biphenyl tetrazonium chloride monohydrate, of 1,1′-di-(3-nitrophenyl)-3,3′-dimethyl-5,5′-(4,4′-biphenylene)-diformazan, and of yellow tetrazolium [2,2′-di-(3-nitrophenyl)-5,5′-dimethyl-3,3′-(4,4′-biphenylene)-ditetrazolium chloride] are described. Solutions of the pure formazan in pyridine absorb visible light maximally at 455 nm;
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Tetrazolium Salts and Formazans

Progress in Histochemistry and Cytochemistry, 1976
The history of the tetrazolium salts and formazans goes back 100 years, to when Friese (1875) reacted benzene diazonium nitrate with nitromethane, to produce a cherry-red "Neue Verbindung". This was the first formazan. 19 years later, Von Pechmann and Runge (1894) oxidised a formazan to produce the first tetrazolium salt.
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The Nitroblue Tetrazolium Test in Tuberculosis

American Journal of Clinical Pathology, 1974
Of 43 patients with active pulmonary tuberculosis, 44% had positive NBT tests. The NBT test in seven cases reverted to negative with antituberculous therapy. Alcoholism, diabetes mellitus, and prior steroid administration did not affect the test.
S E, Ryden, E M, Silverman
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NITROBLUE-TETRAZOLIUM TESTS

The Lancet, 1974
Abstract Nitroblue tetrazolium (N.B.T.) is an interesting compound which is of value in the study of neutrophil physiology. It is useful in the study of phagocytosis and factors effecting phagocytosis, since its addition to blood results in the formation of a particulate object of phagocytosis, while at the same time the dye, which is complexed to ...
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Nitroblue tetrazolium test in neonates

The Journal of Pediatrics, 1978
THE NITROBLUE TETRAZOLIUM test was introduced by Parks et al 1 in 1968 as an aid in the diagnosis of acute bacterial infection. Its use is based on the observation that neutrophil reduction of NBT to an intracellular formazan precipitate is increased under conditions of bacterial infection.
B D, Chandler, N, Kapoor, B E, Barker, R J, Boyle, W, Oh   +4 more
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Reduction of blue tetrazolium by corticosteroids

Journal of Pharmaceutical Sciences, 1975
Pseudo-first-order rate constants were observed for the reaction of corticosteroid or corticosteroid esters with blue tetrazolium. The data indicate that the reactivity of corticosteroids is, in part, a function of their geometry in that corticosteroid reactivity toward blue tetrazolium increases with increasing planarity of the steroid molecule and ...
R E, Graham, E R, Biehl, C T, Kenner, G H, Luttrell, D L, Middleton   +4 more
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On the mechanism of the multistep reduction of tetrazolium salts with special reference to the involvement of tetrazolium radicals

Acta Histochemica, 1994
Thin layer chromatography (TLC) was performed to analyze which products are formed when unstable tetrazolinyl radicals are generated during the reduction of tetrazolium salts under physiological conditions of biochemical and histochemical assays. It was found in aqueous media that irrespective the assay conditions, reduction of 2,3-di(4-nitrophenyl)-5 ...
Seidler, E., van Noorden, C. J.
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GRAM REACTION AND TETRAZOLIUM STAINING

Canadian Journal of Microbiology, 1962
A simple method for differentiation of bacteria parallel to Gram staining is described, using vital staining with blue tetrazolium, decolorizing the preparation with a 1:1 mixture of acetone – ethylene tetrachloride for 4 hours, and counterstaining it with carbol fuchsin.
B B, DIENA, R, WALLACE, L, GREENBERG
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