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PerCP-Cy™5.5 Mouse Anti-Mouse CD45.1
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PerCP-Cy™5.5 Mouse Anti-Mouse CD45.1
Flow cytometric analysis of CD45.1 on mouse splenocytes.  Splenocytes from C57BL/6 mice (left panel) or SJL/J mice (right panel) were stained either with a PerCP-Cy™5.5 Mouse IgG2a, κ isotype control (shaded) or with the PerCP-Cy™5.5 Mouse Anti-Mouse CD45.1 antibody (unshaded).  Histograms were derived from gated events based on light scattering characteristics for lymphocytes.  Flow cytometry was performed on a BD™ LSR II flow cytometry system.
Flow cytometric analysis of CD45.1 on mouse splenocytes.  Splenocytes from C57BL/6 mice (left panel) or SJL/J mice (right panel) were stained either with a PerCP-Cy™5.5 Mouse IgG2a, κ isotype control (shaded) or with the PerCP-Cy™5.5 Mouse Anti-Mouse CD45.1 antibody (unshaded).  Histograms were derived from gated events based on light scattering characteristics for lymphocytes.  Flow cytometry was performed on a BD™ LSR II flow cytometry system.
Product Details
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BD Pharmingen™
Ly-5; Lyt4; CD45R; LCA; Ptprc; Protein tyrosine phosphatase receptor type C
Mouse (QC Testing)
Mouse A.SW IgG2a, κ
SJL mouse thymocytes and splenocytes
Flow cytometry (Routinely Tested)
0.2 mg/ml
19264
AB_1727489
Aqueous buffered solution containing ≤0.09% sodium azide.
RUO


Preparation And Storage

Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze. The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated with PerCP-Cy5.5 under optimum conditions, and unconjugated antibody and free PerCP-Cy5.5 were removed. Storage of PerCP-Cy5.5 conjugates in unoptimized diluent is not recommended and may result in loss of signal intensity.

Product Notices

  1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
  2. An isotype control should be used at the same concentration as the antibody of interest.
  3. Please observe the following precautions: Absorption of visible light can significantly alter the energy transfer occurring in any tandem fluorochrome conjugate; therefore, we recommend that special precautions be taken (such as wrapping vials, tubes, or racks in aluminum foil) to prevent exposure of conjugated reagents, including cells stained with those reagents, to room illumination.
  4. Cy is a trademark of Amersham Biosciences Limited. This conjugated product is sold under license to the following patents: US Patent Nos. 5,486,616; 5,569,587; 5,569,766; 5,627,027.
  5. This product is subject to proprietary rights of Amersham Biosciences Corp. and Carnegie Mellon University and made and sold under license from Amersham Biosciences Corp. This product is licensed for sale only for research. It is not licensed for any other use. If you require a commercial license to use this product and do not have one return this material, unopened to BD Biosciences, 10975 Torreyana Rd, San Diego, CA 92121 and any money paid for the material will be refunded.
  6. PerCP-Cy5.5 is optimized for use with a single argon ion laser emitting 488-nm light. Because of the broad absorption spectrum of the tandem fluorochrome, extra care must be taken when using dual-laser cytometers, which may directly excite both PerCP and Cy5.5™. We recommend the use of cross-beam compensation during data acquisition or software compensation during data analysis.
  7. PerCP-Cy5.5–labelled antibodies can be used with FITC- and R-PE–labelled reagents in single-laser flow cytometers with no significant spectral overlap of PerCP-Cy5.5, FITC, and R-PE fluorescence.
  8. 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.
  9. For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
  10. Please refer to www.bdbiosciences.com/us/s/resources for technical protocols.
560580 Rev. 2
Antibody Details
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A20

The A20 monoclonal antibody specifically binds to CD45 (Leukocyte Common Antigen) on all leukocytes of mouse strains expressing the CD45.1 alloantigen (eg, RIII, SJL/J, STS/A, DA). This alloantigen was originally named Ly-5.2, but was later changed to Ly-5.1 to conform with the convention that the .2 alloantigen designates the C57BL/6 strain. mAb A20 has been reported not to react with leukocytes of most other mouse strains which express the CD45.2 alloantigen. CD45 is a member of the Protein Tyrosine Phosphatase (PTP) family; its intracellular (COOH-terminal) region contains two PTP catalytic domains while the extracellular region is highly variable due to alternative splicing of exons 4, 5, and 6 (designated A, B, and C,  respectively), and differing levels of glycosylation. CD45 isoforms in the mouse are cell type-, maturation-, and activation state-specific. The CD45 isoforms play complex roles in T-cell and B-cell antigen receptor signal transduction. The A20 antibody has been reported to inhibit some responses of B cells (from mice expressing the CD45.1 alloantigen) to antigens and LPS.

560580 Rev. 2
Format Details
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PerCP-Cy5.5
PerCP-Cy5.5 dye is part of the BD blue family of dyes. This tandem fluorochrome is comprised of a fluorescent protein complex (PerCP) with an excitation maximum (Ex Max) of 482 nm and an acceptor dye with an emission maximum (Em Max) at 676 nm. PerCP-Cy5 is designed to be excited by the blue laser (488-nm) and detected using an optical filter centered near 680 nm (e.g., a 695/40 nm bandpass filter). The donor dye can be partially excited by the Violet (405-nm) laser resulting in cross-laser excitation and fluorescence spillover. Please ensure that your instrument’s configurations (lasers and optical filters) are appropriate for this dye.
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PerCP-Cy5.5
Blue 488 nm
482 nm
676 nm
560580 Rev.2
Citations & References
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Development References (7)

  1. Johnson P, Greenbaum L, Bottomly K, Trowbridge IS. Identification of the alternatively spliced exons of murine CD45 (T200) required for reactivity with B220 and other T200-restricted antibodies. J Exp Med. 1989; 169(3):1179-1184. (Biology). View Reference
  2. Morse HC 3rd, Shen FW, Hammerling U. Genetic nomenclature for loci controlling mouse lymphocyte antigens. Immunogenetics. 1987; 25(2):71-78. (Biology). View Reference
  3. Shen FW, Tung JS, Boyse EA. Further definition of the Ly-5 system. Immunogenetics. 1986; 24(3):146-149. (Biology). View Reference
  4. Shen FW. Monoclonal antibodies to mouse lymphocyte differentiation alloantigens. In: Hammerling GJ, Hammerling U, Kearney JF, ed. Monoclonal Antibodies and T-cell Hybridomas; Perspectives and Technical Advances. 1981:25-31.
  5. Suzuki K, Oida T, Hamada H, et al. Gut cryptopatches: direct evidence of extrathymic anatomical sites for intestinal T lymphopoiesis. Immunity. 2000; 13(5):691-702. (Biology). View Reference
  6. Yakura H, Kawabata I, Shen FW, Katagiri M. Selective inhibition of lipopolysaccharide-induced polyclonal IgG response by monoclonal Ly-5 antibody. J Immunol. 1986; 136(8):2729-2733. (Biology: Inhibition). View Reference
  7. Yakura H, Shen FW, Bourcet E, Boyse EA. On the function of Ly-5 in the regulation of antigen-driven B cell differentiation. Comparison and contrast with Lyb-2. J Exp Med. 1983; 157(4):1077-1088. (Biology: Inhibition). View Reference
View All (7) View Less
560580 Rev. 2

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For Research Use Only. Not for use in diagnostic or therapeutic procedures.