Recombinant CD20 Antibody

SKU: orb2635441

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.

Images & Validation

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Tested Applications	IHC-P, WB
Dilution Range	Western blot: 1-2ug/ml,Immunohistochemistry (FFPE): 1-2ug/ml
Reactivity	Human
Application Notes	Optimal dilution of the recombinant CD20 antibody should be determined by the researcher.

Key Properties

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Antibody Type	Primary Antibody
Host	Rabbit
Clonality	Recombinant
Isotype	Rabbit IgG, kappa
Clone No.	MS4A1/7015R
Immunogen	A portion of amino acids 97-297 was used as the immunogen for the recombinant CD20 antibody.
Purification	Protein A affinity
Conjugation	Unconjugated

Storage & Handling

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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	1 mg/ml in 1X PBS; rAlbumin free, sodium azide free
Expiration Date	12 months from date of receipt.
Disclaimer	For research use only

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IHC staining of FFPE human tonsil tissue with recombinant CD20 antibody (clone MS4A1/7015R). HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing. HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

IHC staining of FFPE human tonsil tissue with recombinant CD20 antibody (clone MS4A1/7015R). Negative control inset: PBS instead of primary antibody to control for secondary Ab binding. HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

Negative control: IHC staining of FFPE human brain tissue with recombinant CD20 antibody (clone MS4A1/7015R) at 2 ug/ml in PBS for 30 min RT. HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

Negative control: IHC staining of FFPE human heart tissue with recombinant CD20 antibody (clone MS4A1/7015R) at 2 ug/ml in PBS for 30 min RT. HIER: boil tissue sections in pH9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

Western blot testing of human Raji cell lysate using recombinant CD20 antibody (clone MS4A1/7015R). Predicted molecular weight ~33 kDa.

SDS-PAGE analysis of purified, BSA-free recombinant CD20 antibody (clone MS4A1/7015R) as confirmation of integrity and purity.

Quick Database Links

UniProt

P11836

UniProt Details

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No UniProt data available

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Protocol Information

Western Blot (IB, immunoblot)

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IHC-P

Immunohistochemistry Paraffin

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