Human CD7 Antibody

Catalog # Availability Size / Price Qty
Detection of Human CD7 by Western Blot.
4 Images
Product Details
Citations (1)
Supplemental Products

Human CD7 Antibody Summary

Species Reactivity
Detects human CD7 in direct ELISAs and Western blots. In direct ELISAs, less than 1% cross-reactivity with recombinant mouse CD7 is observed.
Polyclonal Sheep IgG
Antigen Affinity-purified
Kidney embryonic cell line HEK293-derived recombinant human CD7
Accession # P09564
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


Recommended Concentration
Western Blot
0.5 µg/mL
See below
Flow Cytometry
2.5 µg/106 cells
See below
5-15 µg/mL
See below
Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
5-15 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Data Examples

Western Blot Detection of Human CD7 antibody by Western Blot. View Larger

Detection of Human CD7 by Western Blot. Western blot shows lysates of MOLT-4 human acute lymphoblastic leukemia cell line, HepG2 human hepatocellular carcinoma cell line, and human peripheral blood lymphocytes (PBL). PVDF membrane was probed with 0.5 µg/mL of Sheep Anti-Human CD7 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7579) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for CD7 at approximately 35-40 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Flow Cytometry Detection of CD7 antibody in Human PBMCs antibody by Flow Cytometry. View Larger

Detection of CD7 in Human PBMCs by Flow Cytometry. Human peripheral blood mononuclear cells (PBMCs) were stained with Mouse Anti-Human CD3e APC-conjugated Monoclonal Antibody (Catalog # FAB100A) and either (A) Sheep Anti-Human CD7 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7579) or (B) Sheep IgG Control (Catalog # 5-001-A) followed by Phycoerythrin-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # F0126).

Immunocytochemistry CD7 antibody in Human PBMCs by Immunocytochemistry (ICC). View Larger

CD7 in Human PBMCs. CD7 was detected in immersion fixed human peripheral blood mononuclear cells (PBMCs) using Sheep Anti-Human CD7 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7579) at 15 µg/mL for 3 hours at room temperature. Cells were stained using the Northern-Lights™ 557-conjugated Anti-Sheep IgG Secondary Antibody (red; Catalog # NL010) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm and plasma membrane. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.

Immunohistochemistry CD7 antibody in Human Thymus by Immunohistochemistry (IHC-P). View Larger

CD7 in Human Thymus. CD7 was detected in immersion fixed paraffin-embedded sections of human thymus using Sheep Anti-Human CD7 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF7579) at 3 µg/mL overnight at 4 °C. Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (Catalog # CTS013). Tissue was stained using the Anti-Sheep HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS019) and counterstained with hematoxylin (blue). Specific staining was localized to the plasma membrane. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Sterile PBS to a final concentration of 0.2 mg/mL.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: CD7

CD7 (Cluster of Differentiation Antigen 7; also Leu-9, TP41 and GP40) is a 40-44 kDa member of the Ig-superfamily of proteins. It shows restricted expression, being found on fetal thymocytes, CD34+ myeloid and lymphoid progenitor cells, memory CLA- CD45RA+ T cells, and CD56+ IFN-gamma secreting NK cells. CD7 binds to both SECTM1/K12 and galectin-1, and when bound to the latter, initiates complex formation with CD43 in cis. Activation of CD7 may result in either cell proliferation or apoptosis, suggesting a context-dependent signaling mechanism. Mature human CD7 is a 215 amino acid (aa) type I transmembrane glycoprotein. It contains a 155 aa extracellular region (aa 26-180) that shows one V-type Ig-like domain (aa 26-130), and a 39 aa C-terminal cytoplasmic domain. There is one potential alternative splice variant that contains a 79 aa substitution for aa 133-240. Over aa 26-180, human CD7 shares only 43% aa sequence identity with mouse CD7.

Entrez Gene IDs
924 (Human); 12516 (Mouse); 303747 (Rat); 102124399 (Cynomolgus Monkey)
Alternate Names
CD7 antigen (p41); CD7 antigen; CD7 molecule; CD7; GP40T-cell surface antigen Leu-9; LEU-9; T-cell antigen CD7; T-cell leukemia antigen; Tp40; TP41; TP41p41 protein

Product Datasheets

Citation for Human CD7 Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citation: Showing 1 - 1

  1. T-cell functionality testing is highly relevant to developing novel immuno-tracers monitoring T cells in the context of immunotherapies and revealed CD7 as an attractive target
    Authors: KE Mayer, S Mall, N Yusufi, D Gosmann, K Steiger, L Russelli, HO Bianchi, S Audehm, R Wagner, E Bräunlein, A Stelzl, F Bassermann, W Weichert, W Weber, M Schwaiger, C D'Alessand, AM Krackhardt
    Theranostics, 2018;8(21):6070-6087.
    Species: Human
    Sample Types: Whole Cells
    Applications: Flow Cytometry


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