CD20 Antibody

SKU: orb385685

Description

Recognizes a protein of 30-33kDa, which is identified as CD20. It is a non-Ig differentiation antigen of B-cells and its expression is restricted to normal and neoplastic B-cells, being absent from all other leukocytes and tissues. CD20 is expressed by pre B-cells and persists during all stages of B-cell maturation but is lost upon terminal differentiation into plasma cells. This MAb can be used for immunophenotyping of leukemia and malignant cells, B lymphocyte detection in peripheral blood and B cell localization in tissues. It reacts with the majority of B-cells present in peripheral blood and lymphoid tissues and their derived lymphomas. In lymphoid tissue, germinal center blasts and B-immunoblasts are particularly reactive. It is a reliable antibody for ascribing a B-cell phenotype in known lymphoid tissues. Rarely, CD20-positive T-cell lymphomas have been reported. Reactivity has also been noted with Reed-Sternberg cells in cases of Hodgkin s disease, particularly of lymphocyte predominant type.

Research Area

Immunology & Inflammation

Images & Validation

• Tested Applications: FACS, IF, IHC-P
• Dilution Range: Flow cytometry: 1-2ug/10^6 cells,Immunofluorescence: 1-2ug/ml,Immunohistochemistry (FFPE): 1-2ug/ml for 30 min at RT
• Reactivity: Human
• Application Notes:
  The concentration stated for each application is a general starting point. Variations in protocols, secondaries and substrates may require the CD20 antibody to be titered up or down for optimal performance.1. Staining of formalin-fixed tissues requires boiling tissue sections in pH 9 10mM Tris with 1mM EDTA for 10-20 min followed by cooling at RT for 20 minutes.2. The prediluted format is supplied in a dropper bottle and is optimized for use in IHC. After epitope retrieval step (if required), drip mAb solution onto the tissue section and incubate at RT for 30 min.

Key Properties

• Antibody Type: Primary Antibody
• Host: Mouse
• Clonality: Monoclonal
• Isotype: Mouse IgG2a, kappa
• Clone No.: IGEL/773
• Immunogen: Recombinant CD20 protein was used as the immunogen for this CD20 antibody. The epitope is localized to the cytoplasmic region of the protein.
• Purification: Protein G affinity chromatography
• Conjugation: Unconjugated

Storage & Handling

• Storage: Maintain refrigerated at 2-8°C for up to 2 weeks. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
• Buffer/Preservatives: 0.2 mg/ml in 1X PBS with 0.1 mg/ml rAlbumin and 0.05% sodium azide
• Expiration Date: 12 months from date of receipt.
• Disclaimer: For research use only

Flow cytometry testing of PFA-fixed human Raji cells with CD20 antibody (clone IGEL/773); Red = isotype control, Blue = CD20 antibody.

IHC staining of FFPE human tonsil tissue with CD20 antibody (clone IGEL/773).

IHC staining of FFPE human lymphoma tissue with CD20 antibody (clone IGEL/773).

Immunofluorescent staining of PFA-fixed human Raji cells with CD20 antibody (clone IGEL/773, green) and Reddot nuclear stain (red).

SDS-PAGE analysis of purified, BSA-free CD20 antibody (clone IGEL/773) as confirmation of integrity and purity.

Quick Database Links

UniProt

P11836