You Searched For: SOUTHERN BIOTECHNOLOGY MS

Catalog Number: (100245-522)

Supplier: Southern Biotechnology

Description: Biotin Anti-Chicken IgY antibody for use in flow cytometry, immunohistochemistry / immunocytochemistry, ELISA, and immunoprecipitation assays.

Supplier: Southern Biotechnology

Description: CD9 is a 24 kDa member of the transmembrane 4 superfamily (TM4-SF) of cell surface receptors. It is expressed strongly on platelets, lymphoid progenitor cells, activated lymphocytes and endothelia, and, weakly, on eosinophils, granulocytes, monocytes, and macrophages. CD9 functions as an adhesion molecule where it mediates platelet aggregation and activation.

Supplier: Southern Biotechnology

Description: CD5, a member of the scavenger receptor superfamily of cell surface receptors, is a type I transmembrane glycoprotein whose ligand is CD72. It is expressed on most thymocytes, all mature T cells, and a subset of B cells. CD5 plays a role in regulation of T cell activation and signaling.

Catalog Number: (100245-494)

Supplier: Southern Biotechnology

Description: In the chicken, the CD8 molecule is present in two forms - (i) a homodimer of two α chains and (ii) a heterodimer of an α chain and a β chain. While the vast majority of CD8+ cells in the thymus, spleen, and blood of adult chickens express both CD8α- and CD8β-chains, a relatively large proportion of the CD8+ TCR-γδ cells in the spleens of embryos and young chicks express only the α-chain of CD8. Among intestinal epithelial lymphocytes, the major CD8+ T cell populations present in mice are conserved but there is a population of TCR-γδ CD8αβ cells in the chicken that is not found in rodents. Chicken CD8 is expressed on approximately 80% of thymocytes, 45% of blood mononuclear cells, and 50% of spleen cells but less than 1% of cells in the bursa and bone marrow. The monoclonal antibody EP42 recognizes the CD8β chain.

Catalog Number: (100246-256)

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.

Supplier: Southern Biotechnology

Description: CD69, also known as very early activation (VEA) antigen, is a disulfide-linked transmembrane homodimer whose differentially glycosylated subunits range from 35-39 kDa. It is a C-type lectin most closely related to the NKR-P1 and Ly-49 NK cell-activation molecules. CD69 is widely expressed on hematopoietic cells, including lymphocytes, neutrophils and eosinophils. Although not detectable on resting lymphocytes, its expression is rapidly upregulated upon activation of T, B and NK cells, and neutrophils. Constitutive expression of CD69 on subsets of thymocytes suggests that it may be involved in regulation of developmental events in addition to its role in activation of a variety of hematopoietic cells. The monoclonal antibody H1.2F3 augments PMA-induced T-cell proliferation and induces redirected lysis of Fc receptor-bearing target cells by NK cells.

Supplier: Southern Biotechnology

Description: CD86, also known as B7-2, is a type I transmembrane glycoprotein and a member of the immunoglobulin superfamily of cell surface receptors. It is expressed at high levels on resting peripheral monocytes and dendritic cells and at very low density on resting B and T lymphocytes. CD86 expression is rapidly upregulated by B-cell specific stimuli with peak expression at 18-42 hours after stimulation. CD86, along with CD80 (B7-1), is an important accessory molecule in T cell costimulation via its interaction with CD28 and CD152 (CTLA-4). Since CD86 has rapid kinetics of induction, it is believed to be the major CD28 ligand expressed early in the immune response. The monoclonal antibody GL1 blocks mixed lymphocyte reactions and stimulation of T cells by antigen-presenting cells.

Catalog Number: (100243-658)

Supplier: Southern Biotechnology

Description: CD86, also known as B7-2, is a type I transmembrane glycoprotein and a member of the immunoglobulin superfamily of cell surface receptors. It is expressed at high levels on resting peripheral monocytes and dendritic cells and at very low density on resting B and T lymphocytes. CD86 expression is rapidly upregulated by B-cell specific stimuli with peak expression at 18-42 hours after stimulation. CD86, along with CD80 (B7-1), is an important accessory molecule in T cell costimulation via its interaction with CD28 and CD152 (CTLA-4). Since CD86 has rapid kinetics of induction, it is believed to be the major CD28 ligand expressed early in the immune response. The monoclonal antibody GL1 blocks mixed lymphocyte reactions and stimulation of T cells by antigen-presenting cells.

Catalog Number: (100244-022)

Supplier: Southern Biotechnology

Description: The monoclonal antibody 25-9-3 reacts specifically with the I-Ab haplotype of MHC Class II molecules. Class II antigens are predominantly expressed on antigen-presenting cells including B lymphocytes, macrophages, dendritic cells, and certain epithelial cells.

Catalog Number: (100243-242)

Supplier: Southern Biotechnology

Description: CD11b, the integrin αM subunit, combines with CD18, the integrin β2 subunit, to form the integrin Mac-1, also known as complement receptor 3 (CR3), which mediates adhesion to C3bi and ICAM-1/CD54. Mac-1 is expressed at varying levels on granulocytes, macrophages, dendritic cells, NK cells, and B-1 cells in the peritoneal and pleural cavities. Mac-1 expression is rapidly up-regulated on neutrophils after activation and in the same time period that CD62L is shed from the cell surface. In addition to its role in binding C3bi on opsonized targets and mediation of the subsequent ingestion process, Mac-1 is important as an adhesion molecule in the transendothelial migration of monocytes and neutrophils. Cross-reaction of M1/70 to human CD11b has been observed on monocytes, polymorphonuclear leukocytes, and NK cells.

Catalog Number: (100244-226)

Supplier: Southern Biotechnology

Description: Purified Goat F(ab')2 Anti-Human IgM antibody for use in ELISA, flow cytometry, immunocytochemistry, ELISpot, and stimulation assays.

Catalog Number: (100244-188)

Supplier: Southern Biotechnology

Description: Goat Anti-Human Ig-TRITC antibody for use in immunocytochemistry assays.

Catalog Number: (100243-414)

Supplier: Southern Biotechnology

Description: CD31, also known as platelet endothelial cell adhesion molecule-1 (PECAM-1), is a type I integral membrane glycoprotein and a member of the immunoglobulin superfamily of cell surface receptors. It is constitutively expressed on the surface of endothelial cells and concentrated at the junction between them. It is also weakly expressed on many peripheral lymphoid cells and platelets. CD31 interacts homotypically in cell adhesion assays. The monoclonal antibody 390 inhibits the aggregation of L cells transfected with a variant form of CD31.

Catalog Number: (100245-434)

Supplier: Southern Biotechnology

Description: The monoclonal antibody TCR-1 precipitates a heterodimer of Mr 90 kDa (two bands of Mr 50 kDa and 40 kDa upon reduction) on chicken peripheral blood T cells. Deglycosylation of the heterodimer yields two polypeptides of Mr 35 kDa and 32 kDa. Unlike human and mouse in which γδ cells comprise a minor subset of T lymphocytes in the circulation, the chicken has a relatively large subset of γδ T cells. The frequency of TCRγδ cells is typically 20-25% of the total blood T cells but may reach approximately 50% in chickens of six- months of age. The majority of TCRγδ+ cells in the thymus and blood are CD4-CD8- although a small subset of them may express CD8 or CD4 coreceptors. However, when the TCRγδ+ cells migrate into the spleen and intestine most of them begin to express CD8. Although the biological function of γδ T cells is unclear, they are clearly capable of cytotoxic activity in vitro. The CD8+ γδ T cells may also be involved in down-regulation of the immune response. They cannot, however, induce a graft-vs-host (GVH) reactions.

Catalog Number: (100242-230)

Supplier: Southern Biotechnology

Description: Bcl-xL is a 29 kDa member of the Bcl-2 family of proteins involved in regulation of programmed cell death, or apoptosis. It is found in both soluble and membrane fractions of cellular lysates. Like Bcl-2, Bcl-xL has been demonstrated to block apoptosis which is induced by a variety of stimuli and, under certain conditions, offers greater protection against apoptosis than Bcl-2. While formation of heterodimers with the apoptosis-enhancing protein, Bax does not block the apoptosis-suppressing property of Bcl-xL, heterodimerization with Bad effectively inhibits the protective function of Bcl-xL.

Supplier: Southern Biotechnology

Description: ZAP-70 is a protein tyrosine kinase (PTK) with the primary role of catalyzing the phosphorylation of tyrosine residues in cellular proteins, and thus, contributes significantly to the initiation of cell signaling. ZAP-70 is normally expressed on T cell and NK cells.