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CD4 APC SK3 (also known as Leu3a) ASR

CD4 APC 

Clone  SK3 (also known as Leu3a)   (ASR)

  • Concentration 6.0 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 APC
  • Excitation Source Red 633 nm
  • Excitation Max 650 nm
  • Emission Max 660 nm

Allophycocyanin (APC), is an accessory photosynthetic pigment found in blue-green algae. Its molecular weight is approximately 105 kDa. APC has six phycocyanobilin chromophores per molecule, which makes it a very bright fluorochrome that is highly suitable for flow cytometry applications. Due to nearly identical excitation and emission properties but different spillover characteristics, APC and Alexa Fluor® 647 cannot be used simultaneously

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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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