{"product_id":"nsj-v5514-20ug","title":"Recombinant CR2 Antibody \/ Complement receptor 2 \/ CD21, 20 ug","description":"\u003cp\u003eRecognizes a protein of 140kDa, which is identified as the complement receptor 2(CR2)\/CD21. This protein is expressed strongly on mature B cells, follicular dendritic cells and weakly on immature thymocytes and T lymphocytes. In B-cell ontogeny, CD21 appears after the pre-B-stage, is maintained during peripheral B-cell development and is lost upon terminal differentiation into plasma cells. CD21 expression is also gradually lost after stimulation of B cells in vitro.CD21 functions as receptor for C3d, C3dg and iC3b Complement components, for EBV and for IFNalpha.CD21 binds to CD23 and associates with CD19, CD81 and Leu13 to form a large signal-transduction complex involved in B cell activation.\u003c\/p\u003e","brand":"NSJ Bioreagents","offers":[{"title":"20 ug","offer_id":51548383674648,"sku":"V5514-20UG","price":259.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/5652\/1400\/files\/get_image_64d88f07-f019-40c5-a4e8-9f8c05744da3.jpg?v=1768279518","url":"https:\/\/danabiosci.com\/products\/nsj-v5514-20ug","provider":"Dana Bioscience","version":"1.0","type":"link"}