CD4 Antibody

• Catalog Number: orb1825791
• Category: Antibodies
• Description: Recognizes a protein of 55kDa, identified as CD4. It is a membrane glycoprotein of T lymphocytes that interacts with major histocompatibility complex class II antigens and is also a receptor for the human immunodeficiency virus. This protein is expressed not only in T lymphocytes, but also in B cells, macrophages, and granulocytes. It is also expressed in specific regions of the brain. The protein functions to initiate or augment the early phase of T-cell activation, and may function as an important mediator of indirect neuronal damage in infectious and immune-mediated diseases of the central nervous system. The majority of peripheral T-cell lymphomas are derived from the T-helper/regulatory cell subset so that most mature T-cell neoplasms are CD4+/CD8-. Anti-CD4 is used in the immunohistochemical staining of lymphoproliferative disorders to evaluate tumors with CD4 aberrant expression.
• Clonality: Recombinant
• Species/Host: Rabbit
• Isotype: Rabbit IgG, kappa
• Conjugation: Unconjugated
• Reactivity: Human
• Immunogen: A recombinant partial protein sequence (within amino acids 200-400) from the human protein was used as the immunogen for the recombinant CD4 antibody.
• UniProt ID: P01730
• Tested applications: IHC-P, WB
• Dilution range: Immunohistochemistry (FFPE): 1-2ug/ml for 30 minutes at RT,Western blot: 2-4ug/ml
• Antibody Type: Primary Antibody
• Clone Number: CD4/8203R
• Formula: 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced), 0.05% sodium azide
• 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.
• Note: For research use only
• Expiration Date: 12 months from date of receipt.

IHC staining of FFPE human tonsil tissue with recombinant CD4 antibody (clone CD4/8203R) at 2 ug/ml. HIER: boil tissue sections in pH9 10 mM Tris with 1 mM EDTA for 20 min and allow to cool before testing.

IHC staining of FFPE human tonsil tissue with recombinant CD4 antibody (clone CD4/8203R) at 2 ug/ml. HIER: boil tissue sections in pH9 10 mM Tris with 1 mM EDTA for 20 min and allow to cool before testing.

IHC staining of FFPE human bladder cancer pT24 with recombinant CD4 antibody (clone CD4/8203R) at 2 ug/ml. HIER: boil tissue sections in pH9 10 mM Tris with 1 mM EDTA for 20 min and allow to cool before testing.

Negative control: IHC testing of FFPE human brain tissue with recombinant CD4 antibody (clone CD4/8203R) at 2 ug/ml. HIER: boil tissue sections in pH9 10 mM Tris with 1 mM EDTA for 20 min and allow to cool before testing.

SDS-PAGE analysis of purified, BSA-free recombinant CD4 antibody (clone CD4/8203R) as confirmation of integrity and purity.

Western blot testing of human tonsil tissue lysate with recombinant CD4 antibody. Expected molecular weight: 50-55 kDa.