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Multiparameter flow cytometric analysis using BD OptiBuild™ R718 Mouse Anti-Human CD34 antibody (Cat. No. 752176; Right Plot) on Human peripheral blood mononuclear cells, with corresponding IgG Isotype Control (Cat. No. 566928; Left Plot). Flow cytometry was performed using a BD LSRFortessa™ X-20 Flow Cytometer System.
BD OptiBuild™ R718 Mouse Anti-Human CD34
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BD® CompBeads can be used as surrogates to assess fluorescence spillover (compensation). When fluorochrome conjugated antibodies are bound to BD® CompBeads, they have spectral properties very similar to cells. However, for some fluorochromes there can be small differences in spectral emissions compared to cells, resulting in spillover values that differ when compared to biological controls. It is strongly recommended that when using a reagent for the first time, users compare the spillover on cells and BD® CompBeads to ensure that BD® CompBeads are appropriate for your specific cellular application.
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- The production process underwent stringent testing and validation to assure that it generates a high-quality conjugate with consistent performance and specific binding activity. However, verification testing has not been performed on all conjugate lots.
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- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- An isotype control should be used at the same concentration as the antibody of interest.
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The 8G12 monoclonal antibody specifically recognizes CD34, a 105-120 kDa single-chain type I transmembrane glycoprotein. The 8G12 antibody recognizes an epitope on CD34 distinct from the one recognized by clone My10. CD34 is expressed on immature hematopoietic precursor cells and all hematopoietic colony-forming cells in bone marrow and blood, including unipotent (CFU-GM, BFU-E) and pluripotent progenitors (CFU-GEMM, CFU-Mix, and CFUBlast). The CD34 antigen is a differentiation stage-specific leucocyte antigen. Terminal deoxynucleotidyl transferase-positive B- and T-lymphoid precursors in normal bone marrow are CD34+. The CD34 antigen is present on early myeloid cells that express the CD33 antigen but lack the CD14 and CD15 antigens and on early erythroid cells that express the CD71 antigen and dimly express the CD45 antigen. The CD34 antigen is also found on capillary endothelial cells and approximately 1% of human thymocytes. Normal peripheral blood lymphocytes, monocytes, granulocytes, and platelets do not express CD34. CD34 density is highest on early hematopoietic progenitor cells and decreases as cells mature. The antigen is absent on fully differentiated hematopoietic cells. Uncommitted CD34+ progenitor cells are CD38- and lack lineage-specific antigens such as CD71, CD33, CD10, and CD5, while CD34+ cells that are lineage-committed express the CD38 antigen in high density. Most CD34+ cells reciprocally express either the CD45RO or CD45RA antigens, with the CD45RO+ population being the more primitive. Approximately 60% of acute B-lymphoid leukemias and acute myeloid leukemias (AML) and 1% to 5% of acute T-lymphoid leukemias express CD34. CD34 is not expressed on chronic lymphoid leukemias or lymphomas.
研发参考 (17)
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Lansdorp PM, Dougherty GJ, Humphries RK. CD34 epitopes. In: Knapp W. W. Knapp .. et al., ed. Leucocyte typing IV : white cell differentiation antigens. Oxford New York: Oxford University Press; 1989:826-827.
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Andrews RG, Singer JW, Bernstein ID. Precursors of colony-forming cells in humans can be distinguished from colony-forming cells by expression of the CD33 and CD34 antigens and light scatter properties.. J Exp Med. 1989; 169(5):1721-31. (Biology). 查看参考
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Brocklebank AM, Sparrow RL. Enumeration of CD34+ cells in cord blood: a variation on a single-platform flow cytometric method based on the ISHAGE gating strategy.. Cytometry. 2001; 46(4):254-61. (Biology). 查看参考
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Gore SD, Kastan MB, Civin CI. Normal human bone marrow precursors that express terminal deoxynucleotidyl transferase include T-cell precursors and possible lymphoid stem cells.. Blood. 1991; 77(8):1681-90. (Biology). 查看参考
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Greaves MF, Titley I, Colman SM, et al. CD34 cluster workshop report. In: Schlossman SF. Stuart F. Schlossman .. et al., ed. Leucocyte typing V : white cell differentiation antigens : proceedings of the fifth international workshop and conference held in Boston, USA, 3-7 November, 1993. Oxford: Oxford University Press; 1995:840-846.
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Hurwitz CA, Loken MR, Graham ML, et al. Asynchronous antigen expression in B lineage acute lymphoblastic leukemia.. Blood. 1988; 72(1):299-307. (Biology). 查看参考
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Kurtzberg J, Denning SM, Nycum LM, Singer KH, Haynes BF. Immature human thymocytes can be driven to differentiate into nonlymphoid lineages by cytokines from thymic epithelial cells.. Proc Natl Acad Sci USA. 1989; 86(19):7575-9. (Biology). 查看参考
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Lansdorp PM, Sutherland HJ, Eaves CJ. Selective expression of CD45 isoforms on functional subpopulations of CD34+ hemopoietic cells from human bone marrow.. J Exp Med. 1990; 172(1):363-6. (Clone-specific: Flow cytometry). 查看参考
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Lanza F, Moretti S, Papa S, Malavasi F, Castoldi G. Report on the Fifth International Workshop on Human Leukocyte Differentiation Antigens, Boston, November 3-7, 1993.. Haematologica. 79(4):374-86. (Clone-specific: Flow cytometry). 查看参考
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Leary AG, Strauss LC, Civin CI, Ogawa M. Disparate differentiation in hemopoietic colonies derived from human paired progenitors.. Blood. 1985; 66(2):327-32. (Biology). 查看参考
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Loken MR, Shah VO, Dattilio KL, Civin CI. Flow cytometric analysis of human bone marrow. II. Normal B lymphocyte development. Blood. 1987; 70(5):1316-1324. (Biology). 查看参考
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Loken MR, Shah VO, Dattilio KL, Civin CI. Flow cytometric analysis of human bone marrow: I. Normal erythroid development.. Blood. 1987; 69(1):255-63. (Biology). 查看参考
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Peschel C, Köller U. Cluster report: CD34. In: Knapp W. W. Knapp .. et al., ed. Leucocyte typing IV : white cell differentiation antigens. Oxford New York: Oxford University Press; 1989:817-818. 查看参考
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Ryan D, Kossover S, Mitchell S, Frantz C, Hennessy L, Cohen H. Subpopulations of common acute lymphoblastic leukemia antigen-positive lymphoid cells in normal bone marrow identified by hematopoietic differentiation antigens.. Blood. 1986; 68(2):417-25. (Biology). 查看参考
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Siena S, Bregni M, Brando B, et al. Flow cytometry for clinical estimation of circulating hematopoietic progenitors for autologous transplantation in cancer patients.. Blood. 1991; 77(2):400-9. (Clone-specific: Flow cytometry). 查看参考
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Terstappen LW, Huang S, Safford M, Lansdorp PM, Loken MR. Sequential generations of hematopoietic colonies derived from single nonlineage-committed CD34+CD38- progenitor cells. Blood. 1991; 77(6):1218-1227. (Clone-specific: Flow cytometry, Fluorescence activated cell sorting). 查看参考
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Terstappen LW, Safford M, Könemann S, et al. Flow cytometric characterization of acute myeloid leukemia. Part II. Phenotypic heterogeneity at diagnosis.. Leukemia. 1992; 6(1):70-80. (Biology). 查看参考
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