CD21, also known as complement receptor 2, is expressed on all mature circulating B lymphocytes but not on T lymphocytes or natural killer cells. (1) Low density CD21 has also been reported on granulocytes and monocytes. MAb BB6-11C9. (6) stains the following percentages of surface immunoglobulin (sIg) positive cells in porcine lymphoid tissues: 92-96% in peripheral blood; 74-98% in mesenteric lymph nodes; 97-100% in ileal Peyer's patches (ILPP); 93-97% in spleen; and 0% in thymus. (2) The antibody does not stain B cells in cord blood or spleen from pig fetuses (105 days gestation). (2)
This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.
CD19: An Undoubted Biomarker for B Cells CD19 is a cell surface protein member of the large immunoglobulin superfamily that complexes with CD21, CD81, and CD225 in the membrane of mature B-cells. A major function of CD19 is to assemble with the antigen receptor of B-lymphocytes to decrease t... Read full blog post.
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