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Catalog Number: (103260-140)

Supplier: Southern Biotechnology

Description: CD4 is a type I transmembrane glycoprotein expressed on approximately 70% of thymocytes, 10% of spleen cells, and 45% of peripheral blood lymphocytes but less than 1% of bursal cells. The monoclonal antibody CT-4 inhibits both PHA- and Con A-induced proliferative responses of splenocytes and PWM-induced IL-2 production. This antibody also reacts with turkey and quail as demonstrated by flow cytometry.

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Catalog Number: (103265-398)

Supplier: Southern Biotechnology

Description: CD45, also known as the leukocyte common antigen (LCA), exists as four different isoforms (180, 190, 205, 220 kDa) that are generated by alternative splicing of three exons. LCA is found on all cells of hematopoietic origin, except erythrocytes and platelets. CD45 expression is required for T cell and B cell antigen receptor-mediated activation.

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Catalog Number: (100243-002)

Supplier: Southern Biotechnology

Description: Laminins, a family of extracellular matrix glycoproteins, are a major component of basement membranes consisting of an α-chain, a β-chain, and a γ-chain. Laminins have been implicated in a numerous biological activities including cell migration, adhesion, and differentiation.

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Catalog Number: (100243-288)

Supplier: Southern Biotechnology

Description: CD19 is a monomeric transmembrane glycoprotein expressed at relatively constant levels throughout B cell development from early pro-B/pre-B cells (i.e. B220+/CD43+/HSA+) through fully differentiated B cell stages. Terminally differentiated plasma cells do not express CD19. In humans, the CD19 molecule on the surface of mature B cells associates with CD21 (CR-2) and CD81 (TAPA-1), and this multimolecular complex synergizes with surface immunoglobulin to provide signal transduction and promote cellular activation. All splenic and peritoneal IgM+ cells of both B-1 and B-2 lineages are CD19+, with B-1 cells expressing higher levels of CD19 than B-2 cells in these sites. Studies with CD19-deficient mice have suggested that this molecule may not be required for normal generation and maturation of B cells in the bone marrow.

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Supplier: Southern Biotechnology

Description: In the mouse, CD8 exists in two forms – (i) a CD8 heterodimer composed of an α chain (CD8α) and a β chain (CD8β); and (ii) a homodimer of two α chains. The heterodimer is found on the surface of essentially all thymocytes and the “suppressor/cytotoxic” subpopulation of mature T lymphocytes. Subsets of intestinal intraepithelial lymphocytes express CD8α without CD8β. It has been suggested that CD8+β- T cells mature extrathymically, while development of the CD8α+β+ population of T cells is thymus-dependent. CD8 acts as a coreceptor with MHC Class I-restricted T cell receptors in antigen recognition and positive selection of MHC class I-restricted CD8+ T cells. In vivo and in vitro treatment with the 53-6.7 monoclonal antibody effectively depletes CD8α+ cells. The 53-6.7 monoclonal antibody also blocks allogeneic help specific for class I MHC antigens and T cell responses to IL-2.

Catalog Number: (100242-780)

Supplier: Southern Biotechnology

Description: Purified Anti-Mouse IgE antibody for use in ELISA, flow cytometry, immunohistochemistry, western blotting, and ELISpot assays.

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Catalog Number: (100245-244)

Supplier: Southern Biotechnology

Description: Sheep Anti-FITC-HRP for use in ELISA and immunohistochemistry assays.

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Catalog Number: (103264-626)

Supplier: Southern Biotechnology

Description: The αβ TCR is expressed on T lymphocytes of all mouse strains tested. The H57-597 monoclonal antibody does not react with γδ TCR-bearing cells. Plate-bound or soluble H57-597 activates αβ TCR-bearing T cells. In vitro and in vivo, H57-597 can induce immature thymocytes to undergo apoptosis. In vivo administration of H57-597 has been shown to deplete αβ TCR-bearing cells to near completion and prevent graft rejection.

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Catalog Number: (103259-932)

Supplier: Southern Biotechnology

Description: CD62L, also known as L-selectin, is a type I transmembrane glycoprotein with lectin-like and epidermal growth factor-like domains. It binds to sialylated oligosaccharide determinants on high endothelial venules (HEV) in peripheral lymph nodes. In the mouse, CD62L is expressed on most thymocytes and on peripheral leukocytes, including B and T lymphocytes, neutrophils, monocytes, and eosinophils. This member of the selectin family of cell adhesion molecules appears to be required for lymphocyte homing to peripheral lymph nodes and for leukocyte extravasation at sites of inflammation. Expression of CD62L on lymphocytes and neutrophils is rapidly down-regulated upon cell activation and the level of CD62L expression, along with other markers, distinguishes naive T cells from effector/memory T cells. The monoclonal antibody MEL-14 blocks in vitro binding of lymphocytes to peripheral lymph node HEV and inhibits in vivo lymphocyte extravasation into peripheral lymph nodes and the late stages of leukocyte rolling.

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Catalog Number: (103264-194)

Supplier: Southern Biotechnology

Description: Rat IgG1-AP for use as a control in immunocytochemistry assays.

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Catalog Number: (100244-770)

Supplier: Southern Biotechnology

Description: Goat Anti-Rabbit IgG(H+L)-AP antibody with minimal reactivity to mouse and human proteins for use in ELISA, immunohistochemistry / immunocytochemistry, and western blotting assays.

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Catalog Number: (100243-850)

Supplier: Southern Biotechnology

Description: The monoclonal antibody 20d5 reacts with an epitope common to the NKG2A, NKG2C and NKG2E isoforms of the NKG2 heterodimer, a member of the c-type lectin family of inhibitory receptors. Mouse NKG2 is a natural killer (NK) cell receptor for the non-classical MHC class I molecule Qa-1b. NKG2 is expressed on NK cells, lymphokine-activated killer (LAK) T cells, and some CD8+ memory T cells. Two-color immunofluorescent staining with the 20d5 antibody reveals two distinct NKG2+ phenotypes within the NK1.1+CD3- spleen cell population: NKG2hi (50%) and NKG2low (50%). With the exception of DBA/2J mice, NKG2 is expressed on NK1.1+ cells from all mouse strains tested (C57BL/6, BALB/c, 129/J, C3H.SW, AKR/J, SJL).

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Catalog Number: (100246-254)

Supplier: Southern Biotechnology

Description: CD42b, also known as GPIbα, is a two-chain membrane glycoprotein that forms a noncovalent complex with CD42a (GPIX) on the surface of platelets and megakaryocytes. Binding of the GPIb/GPIX heterodimer to von Willebrand factor bound to exposed subendothelial surfaces is essential for platelet adhesion at sites of injury.

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Catalog Number: (100242-534)

Supplier: Southern Biotechnology

Description: Goat F(ab')2 Anti-Mouse IgG(H+L)-PE/CY5 (SPRD) antibody with minimal reactivity to human proteins for use in flow cytometry assays.

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Catalog Number: (100242-082)

Supplier: Southern Biotechnology

Description: Purified Rat IgG2a for use as a control in flow cytometry, immunohistochemistry, immunoprecipitation, and in vitro assays and as a standard in ELISA.

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Catalog Number: (100243-430)

Supplier: Southern Biotechnology

Description: The lymphocyte Fcγ receptors recognize the Fc portion of IgG, presented either as immune complexes or as free antibody. The different classes of receptors are distinct because of varying size, tissue distribution and affinity for IgGs. The Fc type II receptor is expressed on a wide variety of cells including B cells, hematopoietic cells, monocyte/macrophages, neutrophils, platelets, Langerhans cells, eosinophils, basophils, trophoblasts, and endothelial cells of the placenta. The Fcγ type III receptors are higher affinity than the type II and are expressed on macrophages, NK cells and neutrophils. Both types of receptors can be expressed on the same cell and in varying ratios. The receptors are constitutively expressed, although cytokines and lymphokines can modulate their expression. Besides identifying FcγR+ cells, monoclonal antibodies to the FcγII/III receptor have been used to block Fc receptor binding of IgG, Fc-mediated signal transduction and effector functions, clearance of immune complexes and to attenuate infection by organisms dependent on FcγR for parasitic invasion. The monoclonal antibody 93 recognizes a conformational epitope formed by FcγII and FcγIII receptors.

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