Human peripheral blood mononuclear cells (PBMCs) were stained with either (A) Mouse Anti-Human MS4A1/CD20 Monoclonal Antibody (Catalog # MAB4225) or (B) Mouse IgG1 Isotype Control (MAB002) followed by anti-Mouse IgG APC-conjugated Secondary Antibody (F0101B) and Mouse Anti-Human CD19 PE-conjugated Monoclonal Antibody (FAB4867P). Staining was performed using our Staining Membrane-associated Proteins protocol.

CD20 in Human Leukemia.

CD20 was detected in immersion fixed paraffin-embedded sections of human leukemia using Mouse Anti-Human CD20 Monoclonal Antibody (Catalog # MAB4225) at 15 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC001). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to lymphocytes. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.

Applications for Human CD20 Antibody

Application

Recommended Usage

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Flow Cytometry

0.25 µg/10⁶ cells
Sample: Human PBMC

Immunohistochemistry

5-25 µg/mL
Sample: Immersion fixed paraffin-embedded sections of human leukemia

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

Formulation

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.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

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: CD20

CD20 is a 297 amino acid (aa) non-glycosylated type III membrane protein that is the founding member of the MS4A tetraspanin protein family. It is expressed on pre-B, naïve and mature B lymphocytes and B-cell lymphomas. CD20 is associated with lipid rafts upon crosslinking, and appears to play a role in regulation of ion influx. The one extracellular segment of 48 aa shows 65% aa sequence identity between human and mouse CD20.

Long Name

Cluster of Differentiation 20

Alternate Names

B1, Bp35, CD20, LEU-16, Ly-44, MS4A1, S7

Entrez Gene IDs

931 (Human); 12482 (Mouse); 25316 (Rat); 485430 (Canine); 102118491 (Cynomolgus Monkey)

Gene Symbol

MS4A1

UniProt

P11836

Additional CD20 Products

Product Documents for Human CD20 Antibody

Product Datasheets

Download Product Datasheets

COA

SDS

Download SDS

Product Specific Notices for Human CD20 Antibody

For research use only

Citations
Reviews

Calculators
Flow Cytometry

Human CD20 Antibody

R&D Systems, part of Bio-Techne | Catalog # MAB4225

Key Product Details

Species Reactivity

Validated:

Cited:

Applications

Validated:

Cited:

Label

Antibody Source

View all CD20 Antibodies »

Product Specifications

Immunogen

Specificity

Clonality

Host

Isotype

Scientific Data Images for Human CD20 Antibody

Detection of MS4A1/CD20 in Human PBMCs by Flow Cytometry.