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Search results for: Rabbit Anti-D.Aspartic acid Polyclonal Antibody, FITC conjugated,Isotype: IgG

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#21620854   2011/05/18 To Up

Detection of 3-chlorinated tyrosine residues in human cells by flow cytometry.

Hypochlorite is a strong oxidant, generated under pathological conditions, with the potency to introduce chlorine atom into a number of molecules. 3-Chloro- and 3,5-dichlorotyrosine are documented to be generated by this oxidant and their elevated levels were found in many diseases. Thus, we decided to check the possibility of use of FITC-conjugated antibodies for flow cytometric detection of 3-chlorotyrosine residues in human cells (A549, MCF-7, HUVEC-ST) exposed to the action of hypochlorite. Additionally, we compared the effects of chlorohydrins and N-chloroamino acids as chlorine donors. Cell fixation and permeabilization was followed by incubation with rabbit polyclonal anti-3-chlorotyrosine primary antibody and subsequent staining with goat anti-rabbit FITC-labeled secondary antibody. For antibody isotypic control, normal rabbit IgG was employed. Hypochlorite appeared to be the most efficient from the chlorocompounds analyzed in chlorotyrozine generation in all cell lines. Statistically significant increase of fluorescence corresponding to the level of 3-chlorotyrosine residues was found in cells treated with hypochlorite even at non-toxic concentrations (<5μM). This effect was not observed in cells exposed to the action of chlorinated amino acids or chlorohydrins. The use of anti-3-chlorotyrosine antibodies in conjunction with fluorophore-conjugated secondary antibodies analysis allows for detection of 3-chlorotyrosine residues by flow cytometry in cells treated with low doses of hypochlorite.
Agnieszka Robaszkiewicz, Grzegorz Bartosz, Miroslaw Soszynski

1050 related Products with: Detection of 3-chlorinated tyrosine residues in human cells by flow cytometry.

1 kit100ug Lyophilized100ug Lyophilized100ug Lyophilized1.00 flask100ug Lyophilized100ug Lyophilized100ug Lyophilized1.00 flask1.00 flask1.00 flask1 mg

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#12730261   2003/04/28 To Up

In situ localization associates biologically active plant natriuretic peptide immuno-analogues with conductive tissue and stomata.

Plant natriuretic peptide immuno-analogues (irPNP) have previously been shown to affect a number of biological processes including stomatal guard cell movements, ion fluxes and osmoticum-dependent water transport. Tissue printing and immunofluorescent labelling techniques have been used here to study the tissue and cellular localization of irPNP in ivy (Hedera helix L.) and potato (Solanum tuberosum L.). Polyclonal antibodies active against human atrial natriuretic peptide (anti-hANP) and antibodies against irPNP from potato (anti-StPNP) were used for immunolabelling. Tissue prints revealed that immunoreactants are concentrated in vascular tissues of leaves, petioles and stems. Phloem-associated cells, xylem cells and parenchymatic xylem cells showed the strongest immunoreaction. Immunofluorescent microscopy with fluorescein isothiocyanate (FITC)-conjugated goat anti-rabbit IgG supported this finding and, furthermore, revealed strong labelling to stomatal guard cells and the adjacent apoplastic space as well. Biologically active immunoreactants were also detected in xylem exudates of a soft South African perennial forest sage (Plectranthus ciliatus E. Mey ex Benth.) thus strengthening the evidence for a systemic role of the protein. In summary, in situ cellular localization is consistent with physiological responses elicited by irPNPs reported previously and is indicative of a systemic role in plant homeostasis.
M M Maryani, M V Morse, G Bradley, H R Irving, D M Cahill, C A Gehring

1153 related Products with: In situ localization associates biologically active plant natriuretic peptide immuno-analogues with conductive tissue and stomata.

4/120 Packing /sleeve/bo4/120 Packing /sleeve/bo4/120 Packing /sleeve/bo

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#7864993   // To Up

Malaria vaccine research.

In our report "Activation of Raf as a result of recruitment to the plasma membrane" (3 June, p. 1463) (1), panels E and F of figure 1 on page 1464 were incorrect. The correct photographs appear below. In addition, the [See figure in the PDF file] second sentence of the legend to figure 1 should have read, "The Raf constructs were tagged at the COOH-terminus with a Glu-Glu epitope (MEYMPME) (24) for c-Raf, or at the NH(2)-terminus with both the Glu-Glu and the Myc (MEQKLISEEDL) (23) epitopes for RafCAAX"; the next-to-the-last sentence of the legend to figure 1 should have read, "The c-Raf constructs in (A through D) are Glu-Glu-tagged and were detected by using an anti Glu-Glu antibody, and the RafCAAX and Raf6QCAAX constructs used in E and F were detected by using the antibody to Raf COOH-terminal peptide"; and the third sentence of note 26 should have read, "After blocking with 5% milk in phosphate-buffered saline (M-PBS), cells were incubated with a mouse monoclonal antibody to Glu-Glu or a rabbit polyclonal antibody to a 20-amino acid COOH-terminal peptide of Raf-1 (Santa Cruz Biotechnology, Santa Cruz, California), washed, and incubated with donkey antibodies to mouse or rabbit IgG combined with Texas Red (Jackson) in M-PBS, washed, and mounted in FITC-Guard (Testog)."
W R Ballou, C L Diggs, S Landry, B F Hall

1662 related Products with: Malaria vaccine research.

500 tests100 mg10001 mg500 12 ml10 mg50025 g192 Tests n50 100 mg

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#1712263   // To Up

Concomitant delineation of surface Ig, B-cell differentiation antigens, and HLADR on lymphoid proliferations using three-color immunocytometry.

Accurate and consistent enumeration of B-cell subpopulations in lymphoid tissue was achieved through multiparameter three-color immunofluorescence and flow cytometric analysis (FCM). Phycoerythrin (PE)-anti-CD19 (Leu12) and biotinylated anti-HLADr/streptavidin-Duochrome (PE/Texas Red), used in conjunction with polyclonal fluorescein isothiocyanate (FITC) conjugated anti-surface immunoglobulin (SIg) antibodies, effectively separated non-specific binding and background fluorescence from true B-cell surface FITC immunofluorescence, while concomitantly analyzing for HLADr and CD19 phenotypic expression/deletion. Autofluorescence was measured to establish a fluorescence threshold. A second control measured non-specific binding of isotypic control mouse Ig and non-immune rabbit IgG. Cell suspensions from 128 samples of various lymphoid proliferations were studied. In 116 of the 128 samples, kappa/lambda ratios determined by flow cytometry correlated well with immunocytology results obtained using cytospins from the same cell suspension and with histopathologically established diagnosis. Clonality and lineage as defined immunotypically by flow cytometry was concordant with genotypic results in 64 of the 67 cases evaluated. SIg, HLADr, and CD19 deletions were demonstrated by flow cytometry in 8, 4, and 1 case(s), respectively. Discordance was usually attributable to selective loss of large neoplastic cells in flow cytometry specimens or absent expression of SIg by some cytoplasmic Ig (CIg+) lymphomas.
G H Segal, M G Edinger, M Owen, M McNealis, P Lopez, A Perkins, M D Linden, A J Fishleder, M H Stoler, R R Tubbs

2118 related Products with: Concomitant delineation of surface Ig, B-cell differentiation antigens, and HLADR on lymphoid proliferations using three-color immunocytometry.

100tests24 wells24 wells1 kit5 x 50 ug1 kit50 ug100 μg5mg1 kit(96 Wells)

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