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CD4 PE-Cy™7 SK3 (also known as Leu3a) ASR

CD4 PE-Cy™7 

Clone  SK3 (also known as Leu3a)   (ASR)

  • Concentration 12.0 μg/mL
  • Vol. Per Test 5 μL
  • Isotype Mouse BALB/c IgG1, κ
  • Reactivity Human (QC Testing) 
  • Application Flow cytometry (Routinely Tested) 
  • Immunogen Human Peripheral Blood T Cells
  • Workshop No. I T38; III T140,496
  • Entrez Gene ID 920 
  • Storage Buffer Phosphate buffered saline with gelatin and 0.1% sodium azide.
  • Regulatory Status ASR
Product Details Recommended Assay References

Description

The CD4 antibody, clone SK3, is derived from the hybridization of mouse NS-1 myeloma cells with spleen cells from BALB/c mice immunized with human peripheral blood T lymphocytes.

The CD4 antibody recognizes a 55-kilodalton (kDa) glycoprotein that is present on T-helper/inducer lymphocytes and monocytes.

Format
  • Format PE-Cy™7
  • Excitation Source Blue 488 nm,Green 532 nm,Yellow/Green 561 nm
  • Excitation Max 496 nm
  • Emission Max 785 nm

PE-Cy™7 is a tandem fluorochrome that combines PE and a cyanine dye. PE-Cy7 conjugated reagents are as bright as PE conjugates. PE-Cy7 is particularly sensitive to photo-induced degradation, resulting in loss of fluorescence and changes in fluorescence spillover. Extreme caution must be taken to avoid light exposure and prolonged exposure to paraformaldehyde fixative. Fixed cells should be analyzed within 4 hours of fixation in paraformaldehyde or transferred to a paraformaldehyde-free buffer for overnight storage.

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Resources & Tools
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Preparation and Storage

Store vials at 2°C to 8°C. Conjugated forms should not be frozen. Protect from exposure to light. Each reagent is stable until the expiration date shown on the bottle label when stored as directed.


  1. Protection of Laboratory Workers from Occupationally Acquired Infections; Approved Guideline—Third Edition. Wayne, PA: Clinical and Laboratory Standards Institute; 2005. CLSI document M29-A3.

  2. Bernard A, Boumsell L, Hill C. Joint report of the first international workshop on human leucocyte differentiation antigens by the investigators of the participating laboratories. In: Bernard A, Boumsell L, Dausset J, Milstein C, Schlossman SF, eds. Leucocyte Typing. New York, NY: Springer-Verlag; 1984:9-108.

  3. Centers for Disease Control. Perspectives in disease prevention and health promotion update: universal precautions for prevention of transmission of human immunodeficiency virus, hepatitis B virus, and other bloodborne pathogens in health-care settings. MMWR. 1988;37:377-388.

  4. Engleman EG, Benike CJ, Glickman E, Evans RL. Antibodies to membrane structures that distinguish suppressor/cytotoxic and helper T lymphocyte subpopulations block the mixed leukocyte reaction in man. J Exp Med. 1981;153:193-198.

  5. Evans RL, Wall DW, Platsoucas CD, et al. Thymus-dependent membrane antigens in man: inhibition of cell-mediated lympholysis by monoclonal antibodies to the TH2 antigen. Proc Natl Acad Sci USA. 1981;78:544-548.

  6. Kotzin BL, Benike CJ, Engleman EG. Induction of immunoglobulin-secreting cells in the allogeneic mixed leukocyte reaction: regulation by helper and suppressor lymphocyte subsets in man. J Immunol. 1981;127:931-935.

  7. Ledbetter JA, Evans RL, Lipinski M, Cunningham-Rundles C, Good RA, Herzenberg LA. Evolutionary conservation of surface molecules that distinguish T-lymphocyte helper/inducer and T cytotoxic/suppressor subpopulations in mouse and man. J Exp Med. 1981;153:310-323.

  8. Reichert T, DeBruyère M, Deneys V, et al. Lymphocyte subset reference ranges in adult Caucasians. Clin Immunol Immunopath. 1991;60:190-208.

  9. Wood GS, Warner NL, Warnke RA. Anti–Leu-3/T4 antibodies react with cells of monocyte/macrophage and Langerhans lineage. J Immunol. 1983;131:212-216.

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