{"product_id":"il-21-monoclonal-antibody-ffa21-pe-ebioscience","title":"IL-21 Monoclonal Antibody (FFA21), PE, eBioscience","description":"\u003cp\u003e\u003cstrong\u003ePRODUCT DETAILS\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eHost: \u003c\/b\u003e\u003cspan\u003eRat\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eIsotype: \u003c\/b\u003e\u003cspan\u003eIgG2a, kappa\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eClonality: \u003c\/b\u003e\u003cspan\u003eMonoclonal\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eClone: \u003c\/b\u003e\u003cspan\u003eFFA21\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFormat: \u003c\/b\u003e\u003cspan\u003ePE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eReactivity: \u003c\/b\u003e\u003cspan\u003eMs\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eApplication: \u003c\/b\u003e\u003cspan\u003eFlow Cytometry\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eTested Dilution: \u003c\/b\u003e\u003cspan\u003e0.25 µg\/test\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eConcentration: \u003c\/b\u003e\u003cspan\u003e0.2 mg\/mL\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eStorage: \u003c\/b\u003e\u003cspan\u003e4°C, store in dark, DO NOT FREEZE!\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFormulation: \u003c\/b\u003e\u003cspan\u003ePBS with 0.09% sodium azide; pH 7.2\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePurification: \u003c\/b\u003e\u003cspan\u003eAffinity chromatography\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eData Sheet: \u003c\/b\u003e\u003ca href=\"https:\/\/www.thermofisher.com\/order\/genome-database\/dataSheetPdf?producttype=antibody\u0026amp;productsubtype=antibody_primary\u0026amp;productId=12-7211-82\" target=\"_blank\"\u003eTDS\u003c\/a\u003e\u003c\/p\u003e \u003cbr\u003e\u003cp\u003e\u003cspan\u003e\u003cb\u003eSpecific Information\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eDescription: This FFA21 monoclonal antibody reacts with mouse interleukin-21 (IL-21). IL-21 is a 17 kDa immunomodulatory cytokine produced mainly by NKT, T helper (Th) 17 and T follicular helper (TFH) cells. In TFH cells, IL-21 expression leads to autocrine signaling through the IL-21 receptor (IL-21R) and STAT3, which leads to additional transcriptional activation by Bcl6. As with IFN gamma for Th1, IL-4 for Th2 and IL-17A for Th17, IL-21 is critical for TFH cell effector function. This cytokine plays a role in T cell-dependent B cell differentiation into plasma cells and memory cells, stimulation of IgG production and induction of apoptotic signaling in naive B cells.\u003c\/p\u003e\u003cp\u003eIn Th17 cells, IL-21 expression and autocrine feedback through STAT3, IRF4 and ROR gamma t lead to upregulation of the IL-23R, thereby preparing Th17 cells for maturation and maintenance by the inflammatory cytokine IL-23. While upregulating IRF4 and ROR gamma t, IL-21 also mediates the downregulation of Foxp3. High levels of IL-21 are present in chemically-induced colitis models. IL-21-deficient mice are protected from developing colitis upon chemical treatment by their inability to upregulate Th17-associated molecules.\u003c\/p\u003e\u003cp\u003ePreliminary data suggest that clone FFA21 recognizes a different epitope than anti-mouse IL-21 clone mhalx21 (\u003ca href=\"https:\/\/www.thermofisher.com\/antibody\/product\/IL-21-Antibody-clone-mhalx21-Monoclonal\/51-7213-82\"\u003eProduct # 51-7213-82\u003c\/a\u003e).\u003c\/p\u003e\u003cp\u003eApplications Reported: This FFA21 antibody has been reported for use in intracellular staining followed by flow cytometric analysis. \u003c\/p\u003e\u003cp\u003eThis clone has been optimized for use with eBioscience IC Fixation and Permeabilization kit (\u003ca href=\"https:\/\/www.thermofisher.com\/order\/catalog\/product\/88-8824-00\"\u003eProduct # 88-8824-00\u003c\/a\u003e).\u003c\/p\u003e\u003cp\u003eApplications Tested: This FFA21 antibody has been tested on Th17-polarized mouse splenocytes restimulated with PMA, ionomycin and brefeldin A for 5 hours. This can be used at less than or equal to 0.25 µg per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells\/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.\u003c\/p\u003e\u003cp\u003eExcitation: 488-561 nm; Emission: 578 nm; Laser: Blue Laser, Green Laser, Yellow-Green Laser.\u003c\/p\u003e\u003cp\u003eFiltration: 0.2 µm post-manufacturing filtered.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003eFor Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.","brand":"Cytek Biosciences","offers":[{"title":"100 µg","offer_id":43190921756708,"sku":"12-7211-82","price":468.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1654\/6801\/files\/12-7211-82_IL-21_Flow_1-20170119083539.jpg?v=1769042978","url":"https:\/\/cytekbio.com\/products\/il-21-monoclonal-antibody-ffa21-pe-ebioscience","provider":"Cytek Biosciences","version":"1.0","type":"link"}