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Human CXCL13/BLC/BCA‑1 Antibody

Catalog # MAB8012 | R&D Systems, Inc. a Bio-Techne Brand
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Key Product Details

Species Reactivity



Immunohistochemistry, Intracellular Staining by Flow Cytometry, Neutralization



Antibody Source

Monoclonal Mouse IgG1 Clone # 53602

Product Summary for Human CXCL13/BLC/BCA‑1 Antibody


E. coli-derived recombinant human CXCL13/BLC/BCA-1
Accession # O43927


Detects human CXCL13/BLC/BCA-1 in direct ELISAs.







Scientific Data Images for Human CXCL13/BLC/BCA‑1 Antibody

CXCL13/BLC/BCA-1 antibody in Human Tonsil by Immunohistochemistry (IHC-P).

CXCL13/BLC/BCA-1 in Human Tonsil.

CXCL13/BLC/BCA-1 was detected in immersion fixed paraffin-embedded sections of human tonsil using Mouse Anti-Human CXCL13/BLC/BCA-1 Monoclonal Antibody (Catalog # MAB8012) at 1.7 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody VC001). Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (CTS013). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to cytoplasm. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.
Chemotaxis Induced by CXCL13/BLC/BCA-1 and Neutralization by Human CXCL13/BLC/BCA-1 Antibody.

Chemotaxis Induced by CXCL13/BLC/BCA-1 and Neutralization by Human CXCL13/BLC/BCA-1 Antibody.

Recombinant Human CXCL13/BLC/BCA-1 (801-CX) chemoattracts the BaF3 mouse pro-B cell line transfected with human CXCR5 in a dose-dependent manner (orange line). The amount of cells that migrated through to the lower chemotaxis chamber was measured by Resazurin (AR002). Chemotaxis elicited by Recombinant Human CXCL13/BLC/BCA-1 (0.05 µg/mL) is neutralized (green line) by increasing concentrations of Mouse Anti-Human CXCL13/BLC/BCA-1 Monoclonal Antibody (Catalog # MAB8012). The ND50 is typically 0.5‑2.5 µg/mL.

Detection of CXCL13/BLC/BCA‑1 in Immature dendritic cells by Flow Cytometry.

Immature dendritic cells (CD14 selected PBMCs are treated with 20 ng/mL Recombinant Human IL-4 Protein (204-IL) and 50 ng/mL Recombinant Human GM-CSF Protein (215-GM) for 6 days) were stained with Mouse Anti-Human CXCL13/BLC/BCA‑1 Monoclonal Antibody (Catalog # MAB8012, filled histogram) or isotype control antibody (Catalog # MAB002, open histogram), followed by Allophycocyanin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0101B). To facilitate intracellular staining, cells were fixed and permeabilized with FlowX FoxP3 Fixation & Permeabilization Buffer Kit (FC012). View our protocol for Staining Intracellular Molecules.

Applications for Human CXCL13/BLC/BCA‑1 Antibody

Recommended Usage


1-25 µg/mL
Sample: Immersion fixed paraffin-embedded sections of human tonsil tissue

Intracellular Staining by Flow Cytometry

0.25 µg/106 cells
Sample: Immature Dendritic cells were used (CD14 selected PBMCs are treated with 20 ng/mL rhIL-4 (Catalog # 204-IL) and 50 ng/mL rhGM-CSF (Catalog # 215-GM) for 6 days) and TT human medullary thyroid cancer cells


Measured by its ability to neutralize CXCL13/BLC/BCA‑1-induced chemotaxis in the BaF3 mouse pro‑B cell line transfected with human CXCR5. The Neutralization Dose (ND50) is typically 0.5-2.5 µg/mL in the presence of 0.05 µg/mL Recombinant Human CXCL13/BLC/BCA‑1.
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Formulation, Preparation and Storage


Protein A or G purified from hybridoma culture supernatant

Endotoxin Level

<0.10 EU per 1 μg of the antibody by the LAL method.


Reconstitute at 0.5 mg/mL in sterile PBS.

Reconstitution Buffer Available:
Size / Price


Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: CXCL13/BLC/BCA-1

CXCL13, also known as B-lymphocyte chemoattractant (BLC), is a CXC chemokine that is constitutively expressed in secondary lymphoid organs. BCA-1 cDNA encodes a protein of 109 amino acid residues with a leader sequence of 22 residues. Mature human BCA-1 shares 64% amino acid sequence similarity with the mouse protein and 23-34% amino acid sequence identity with other known CXC chemokines. Recombinant or chemically synthesized BCA-1 is a potent chemoattractant for B lymphocytes but not T lymphocytes, monocytes or neutrophils. BLR1, a G protein-coupled receptor originally isolated from Burkitt’s lymphoma cells, has now been shown to be the specific receptor for BCA-1. Among cells of the hematopoietic lineages, the expression of BLR1, now designated CXCR5, is restricted to B lymphocytes and a subpopulation of T helper memory cells. Mice lacking BLR1 have been shown to lack inguinal lymph nodes. These mice were also found to have impaired development of Peyer’s patches and defective formation of primary follicles and germinal centers in the spleen as a result of the inability of B lymphocytes to migrate into B cell areas.


  1. Gunn, M.D. et al. (1998) Nature, 391:799.
  2. Legler, D.F. et al. (1998) J. Exp. Med. 187:655.
  3. Forster, R. et al. (1996) Cell 87:1037.

Alternate Names


Entrez Gene IDs

10563 (Human); 55985 (Mouse)

Gene Symbol



Product Documents for Human CXCL13/BLC/BCA‑1 Antibody

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human CXCL13/BLC/BCA‑1 Antibody

For research use only

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