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Preparation and Storage
Product Notices
- 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.
- Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
The HIS24 antibody reacts with a developmentally regulated form of CD45 found on most B lymphocytes, including developing B cells in the bone marrow and peripheral B cells, but not plasma cells. The level of expression of this CD45R antigen appears to be an indicator of both maturational stages in the B-cell lineage and of functionally distinct B-cell subsets. The HIS24 mAb, in combination with other markers such as TdT and Ig expression, is effective in the identification of B-cell progenitors. CD45 is a member of the Protein Tyrosine Phosphatase (PTP) family: Its intracellular (COOH-terminal) region contains two PTP catalytic domains, and the extracellular region is highly variable due to alternative splicing of exons 4, 5, and 6 (designated A, B, and C, respectively), plus differing levels of glycosylation. The CD45 isoforms detected in the rat are cell type-, maturation-, and activation state-specific. The CD45 isoforms play complex roles in T-cell and B-cell antigen receptor signal transduction.
Development References (7)
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Deenen GJ, Hunt SV, Opstelten D. A stathmokinetic study of B lymphocytopoiesis in rat bone marrow: proliferation of cells containing cytoplasmic mu-chains, terminal deoxynucleotidyl transferase and carrying HIS24 antigen. J Immunol. 1987; 139(3):702-710. (Biology). View Reference
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Hermans MH, Deenen GJ, De Boer N, Bo W, Kroese FG, Opstelten D. Expression of HIS50 Ag: a rat homologue of mouse heat-stable antigen and human CD24 on B lymphoid cells in the rat. Immunology. 1997; 90(1):14-22. (Biology). View Reference
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Johnson P, Maiti A, Ng DHW. CD45: A family of leukocyte-specific cell surface glycoproteins. In: Herzenberg LA, Weir DM, Herzenberg LA, Blackwell C , ed. Weir's Handbook of Experimental Immunology, Vol 2. Cambridge: Blackwell Science; 1997:62.1-62.16.
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Kroese FG, Butcher EC, Lalor PA, Stall AM, Herzenberg LA. The rat B cell system: the anatomical localization of flow cytometry-defined B cell subpopulations. Eur J Immunol. 1990; 20(7):1527-1534. (Biology). View Reference
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Kroese FG, Opstelten D, Wubbena AS, et al. Monoclonal antibodies to rat B lymphocyte (sub-)populations. Adv Exp Med Biol. 1985; 186:81-89. (Immunogen). View Reference
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Kroese FG, Wubbena AS, Opstelten D, et al. B lymphocyte differentiation in the rat: production and characterization of monoclonal antibodies to B lineage-associated antigens. Eur J Immunol. 1987; 17(7):921-928. (Immunogen). View Reference
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Opstelten D, Deenen GJ, Rozing J, Hunt SV. B lymphocyte-associated antigens on terminal deoxynucleotidyl transferase-positive cells and pre-B cells in bone marrow of the rat. J Immunol. 1986; 137(1):76-84. (Biology). View Reference
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For Research Use Only. Not for use in diagnostic or therapeutic procedures.
