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Catalog Number: (101442-750)

Supplier: Southern Biotechnology

Description: The CD23 antigen is the low affinity IgE Fc receptor, which is a 45-49 kDa protein with 38 and 28 kDa fragments. It is expressed on most mature, conventional B cells (but not on peritoneal CD5+ B cells) and can also be found on the surface of T cells, macrophages and platelets. It is distinct from the high affinity IgE receptors found on basophils and mast cells which mediate allergic reactions. The low affinity receptors are thought to play a role in isotype specific immunoregulation. The regulation of CD23 surface expression appears to be integral with the complex IgE system which involves interactions of cells, cytokines, antibodies and regulatory factors. CD23 has been described as a “membrane bound cytokine," in that the soluble cleavage products of CD23 are themselves able to act as cytokines in vitro.

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Catalog Number: (103265-240)

Supplier: Southern Biotechnology

Description: APC Anti-Human Kappa antibody for use in flow cytometry assays.

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Catalog Number: (103259-788)

Supplier: Southern Biotechnology

Description: Goat Anti-Mouse IgG2a-HRP antibody for use in ELISA, immunohistochemistry / immunocytochemistry, and western blotting assays.

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Catalog Number: (100242-466)

Supplier: Southern Biotechnology

Description: Purified Anti-Mouse GM-CSF antibody for use in flow cytometry, immunohistochemistry / immunocytochemistry, western blotting, ELISA, ELISpot, and multiplex assays.

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Catalog Number: (100245-614)

Supplier: Southern Biotechnology

Description: Chicken CD44 is a type I transmembrane glycoprotein expressed on many cell types including B cells, most T cells, monocytes, and some epithelial cells. CD44 primarily functions as an adhesion molecule. It has been implicated in various processes such as hematopoiesis, lymphocyte homing, leukocyte activation, tumor metastasis, and development. The monoclonal antibody AV6 also reacts with turkey peripheral blood mononuclear cells.

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Catalog Number: (100242-110)

Supplier: Southern Biotechnology

Description: Rat IgG2b-PE/CY5 (SPRD) for use as a control in flow cytometry assays.

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Catalog Number: (100246-138)

Supplier: Southern Biotechnology

Description: CD11c is a 150 kDa adhesion glycoprotein that associates with β2 integrin to form the CD11c/CD18 heterodimer that binds CD54 (ICAM-1) and fibrinogen. It is expressed on NK cells, a subset of B and T cells, granulocytes, monocytes, and macrophages. It functions in cytotoxic T cell killing and in neutrophil and monocyte adhesion to endothelium.

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Catalog Number: (100244-098)

Supplier: Southern Biotechnology

Description: The “classical” MHC Class I molecules are histocompatibility antigens encoded by the H-2 gene complex and consist of heterodimers of highly polymorphic α chains noncovalently associated with the invariant β2-microglobulin. These antigens are expressed on most nucleated cells but expression varies on different cell types. MHC Class I molecules present endogenously synthesized peptides to CD8+ T lymphocytes, which are usually cytotoxic T cells. MHC Class I antigens expressed on thymic epithelial cells regulate the positive and negative selection of CD8+ T cells during T cell ontogeny. The monoclonal antibody 34-1-2S binds to a common determinant in the α3 domains of H-2Kd and H-2Dd in the presence or absence of β2 microglobulin. It cross reacts with the α3 domain of H-2Kb.

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Catalog Number: (100243-310)

Supplier: Southern Biotechnology

Description: The CD23 antigen is the low affinity IgE Fc receptor, which is a 45-49 kDa protein with 38 and 28 kDa fragments. It is expressed on most mature, conventional B cells (but not on peritoneal CD5+ B cells) and can also be found on the surface of T cells, macrophages and platelets. It is distinct from the high affinity IgE receptors found on basophils and mast cells which mediate allergic reactions. The low affinity receptors are thought to play a role in isotype specific immunoregulation. The regulation of CD23 surface expression appears to be integral with the complex IgE system which involves interactions of cells, cytokines, antibodies and regulatory factors. CD23 has been described as a “membrane bound cytokine," in that the soluble cleavage products of CD23 are themselves able to act as cytokines in vitro.

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Catalog Number: (100246-384)

Supplier: Southern Biotechnology

Description: CD79 is a disulfide-linked heterodimer composed of an α chain (CD79a) and a β chain (CD79b) that associates non-covalently with membrane immunoglobulin to form the B cell receptor (BCR) complex. Its expression is restricted to B lymphocytes first appearing on the surface at the pro-B cell stage and remaining through all stages of B cell differentiation prior to plasma cells. Crosslinking of the BCR leads to B cell activation. The monoclonal antibody CB3-1 reacts with the β chain of CD79.

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Catalog Number: (100244-364)

Supplier: Southern Biotechnology

Description: Goat F(ab')2 Anti-Human Kappa-FITC antibody with minimal reactivity to mouse proteins for use in flow cytometry assays.

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Catalog Number: (103264-484)

Supplier: Southern Biotechnology

Description: Alexa Fluor 555 Anti-Mouse IgM antibody for use in immunohistochemistry and western blotting assays.

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Catalog Number: (100243-300)

Supplier: Southern Biotechnology

Description: CD22, also known as Lyb-8, is a heterodimeric transmembrane glycoprotein and a member of a structurally related group of immunoglobulin (Ig) superfamily domain-containing proteins called the sialoadhesin family. It is detected in the cytoplasm early in B cell development (late pro-B cell stage), appears on the cell surface concomitant with IgD, and is found on most IgM+IgD+ mature B lymphocytes. Expression is lost with terminal differentiation of B cells and is absent on plasma cells. Activation of B cells via cross-linking of surface Ig increases CD22 expression. CD22 associates with the B cell receptor (BCR) complex and mediates intercellular adhesion. Its intracellular domain is phosphorylated after antigen receptor cross-linking and is involved in negative regulation of B cell activation.

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Catalog Number: (100245-930)

Supplier: Southern Biotechnology

Description: CD20 is a 33-37 kDa unglycosylated phosphoprotein. Although not a member of the tetraspanin superfamily of cell surface receptors, it crosses the cell membrane four times. It is expressed on all stages of B cell differentiation except plasma cells. The CD20 molecule is involved in regulation of B cell differentiation presumably via its reported function as a Ca++ channel subunit.

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Catalog Number: (100242-810)

Supplier: Southern Biotechnology

Description: PE/CY7 Anti-Mouse IgM antibody for use in flow cytometry assays.

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Catalog Number: (103259-658)

Supplier: Southern Biotechnology

Description: Interleukin-25 (IL-25), also known as interleukin-17E (IL-17E), is a 17 kDa protein and member of the IL-17 cytokine family. This cytokine is secreted by a variety of cells including type 2 helper T cells (Th2), bone marrow-derived mast cells, and alveolar macrophages. On target cells, IL-25 can induce the production of several type 2 cytokines including IL-4, IL-5, and IL-13 and implicates a role for this cytokine in type 2 immune response. Studies have linked this cytokine in promoting airway hyperreactivity, limiting pro-inflammatory cytokine production and chronic intestinal inflammation, and providing protective immunity following intestinal helminth infection.

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