CD19 Antibody

• Catalog Number: orb699723
• Category: Antibodies
• Description: CD19 is a transmembrane glycoprotein that contains two extracellular immunoglobulin-like domains. CD19 is present in both benign and malignant B-cells and is considered to be the most reliable surface marker of this lineage over a wide range of maturational stages. In normal lymphoid tissue, CD19 is observed in germinal centers, in mantle zone cells, and in scattered cells of the inter-follicular areas. Anti-CD19 exhibits an overall immunoreactivity pattern similar to those of the antibodies against CD20 and CD22. However, in contrast to CD20, expression of CD19 is continuous throughout B-cell development and through terminal differentiation of B-cells into plasma cells. Anti-CD19 positivity is seen in the vast majority of B-cell neoplasms commonly at a lower intensity than normal B-cell counterparts. Plasma cell neoplasms are nearly always negative, as are T-cell neoplasms.
• Species/Host: Mouse
• Clonality: Recombinant
• Clone Number: rCD19/4591
• Tested applications: IHC-P
• Reactivity: Human
• Isotype: Mouse IgG2a, kappa
• Immunogen: A portion of amino acids 456-556 from the human protein was used as the immunogen for the recombinant CD19 antibody.
• Dilution range: Immunohistochemistry (FFPE): 1-2ug/ml for 30 minutes 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), 0.05% sodium azide
• Hazard Information: This recombinant CD19 antibody is available for research use only.
• UniProt ID: P15391
• Storage: Store the recombinant CD19 antibody at 2-8°C (with azide) or aliquot and store at -20°C or colder (without azide).
• Buffer/Preservatives: 0.2 mg/ml in 1X PBS with 0.1 mg/ml rAlbumin (US sourced), 0.05% sodium azide
• Note: For research use only
• Application notes: Optimal dilution of the recombinant CD19 antibody should be determined by the researcher.
• Expiration Date: 12 months from date of receipt.

IHC staining of FFPE human lymph node with recombinant CD19 antibody. HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

IHC staining of FFPE human lymph node with recombinant CD19 antibody. HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

SDS-PAGE analysis of purified, BSA-free recombinant CD19 antibody as confirmation of integrity and purity.