CD20 Antibody

• Catalog Number: orb606513
• Category: Antibodies
• 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.
• Species/Host: Mouse
• Clonality: Recombinant
• Clone Number: rIGEL/773
• Tested applications: FACS, IF, IHC-P
• Reactivity: Human
• Isotype: Mouse IgG1, kappa
• Immunogen: Human CD20 protein was used as the immunogen for this recombinant CD20 antibody.
• Dilution range: Immunofluorescence: 1-2ug/ml,Flow cytometry: 1-2ug/million cells,Immunohistochemistry (FFPE): 1-2ug/ml for 30 min at RT
• Purity: Protein G affinity chromatography
• Conjugation: Unconjugated
• Formula: 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced) and 0.05% sodium azide
• Hazard Information: This recombinant CD20 antibody is available for research use only.
• UniProt ID: P11836
• Storage: Recombinant CD20 antibody with azide can be stored at 2-8°C. The azide-free format should be aliquoted and stored at -20°C or colder.
• Buffer/Preservatives: 0.2 mg/ml in 1X PBS with 0.1 mg/ml rAlbumin (US sourced) and 0.05% sodium azide
• Note: For research use only
• Application notes: Titering of the recombinant CD20 antibody may be required for optimal performance.1. 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.
• Expiration Date: 12 months from date of receipt.

IHC testing of FFPE human tonsil tissue with recombinant CD20 antibody (clone rIGEL/773). Required HIER: steam section in pH6 citrate buffer for 20 min.

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

Immunofluorescent staining of human Raji cells with recombinant CD20 antibody (clone rIGEL/773, green) and Reddot nuclear stain (red).

Flow cytometry testing of human Raji cells with recombinant CD20 antibody (clone rIGEL/773); Red=isotype control, Blue= recombinant CD20 antibody.

Analysis of HuProt (TM) microarray containing more than 19, 000 full-length human proteins using recombinant CD20 antibody (clone rIGEL/773). These results demonstrate the foremost specificity of the rIGEL/773 mAb. Z- and S- score: The Z-score represents the strength of a signal that an antibody (in combination with a fluorescently-tagged anti-IgG secondary Ab) produces when binding to a particular protein on the HuProt (TM) array. Z-scores are described in units of standard deviations (SD's) above the mean value of all signals generated on that array. If the targets on the HuProt (TM) are arranged in descending order of the Z-score, the S-score is the difference (also in units of SD's) between the Z-scores. The S-score therefore represents the relative target specificity of an Ab to its intended target.