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Catalog Number: (75841-862)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The RA3-6B2 monoclonal antibody specifically reacts with a 220 kDa exon A-restricted epitope on the extracellular domain of mouse CD45 glycoprotein. CD45R/B220 is expressed on all the development stages of B cells, and at a low level on plasma cells and a subset of memory B cells. Low levels of CD45R/B220 are also expressed by some activated T lymphocytes, natural killer cell progenitors in the bone marrow, lymphokine activated killer cells (LAK), T lymphocytes of lpr/lpr mutant mouse, apoptotic T cells of mice injected with bacterial superantigens, and macrophage progenitors in fetal liver.The CD45 molecule is a member of the Protein Tyrosine Phosphatase (PTP) family, because its intracellular region contains two PTP domains. The extracellular region’s variability is caused by different levels of glycosylation, and the splicing of the 4, 5, and 6 exons. The isoforms found in the mouse strains depend on the activation state, maturation stage and cell type, and are very important in B and T lymphocytes antigen receptor signal transduction.The RA3-6B2 antibody inhibits in vivo B lymphocytes responses and enhances isotype switching during in vitro B lymphocyte responses.

Catalog Number: (75841-998)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The O323 monoclonal antibody specifically binds to the human CD27, which is a lymphocyte-specific member of the TNF/NGF-R family, expressed on a subset of human thymocytes and the majority of the mature T cells. CD27 is upregulated by T lymphocytes stimulation, and binds to CD70, enhancing the interaction between T and B lymphocytes. CD27 is a marker of memory B cells.

Catalog Number: (75842-032)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The Hit8a monoclonal antibody reacts with the human CD8a molecule, a 32 kDa cell surface receptor expressed either as a heterodimer (CD8 α/β) or as a homodimer (CD8 α/α) on the majority of thymocytes, a subpopulation of mature T cells, and natural killer cells. CD8 interacts with the major histocompatibility complex class I (MHC class I) molecules on antigen-presenting cells or epithelial cells. The Hit8a antibody reacts with 13-48% of peripheral lymphocytes, 80% of thymocytes, and a subset of natural killer cells. HIT8a, RPA-T8, and OKT8 antibodies do not compete with each other for binding to peripheral leukocytes, meaning that that they do not recognize the same epitope or block each other by steric hindrance.

Catalog Number: (75843-688)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The HM40-3 monoclonal antibody reacts with mouse CD40, a 48kDA type I glycoprotein known as Bp50. CD40 is part of the TNFR family and expressed on a subset of T cells, B cells, dendritic cells, and macrophages. It has been shown to be involved in the protection of B cells from apoptosis, B cell differentiation, co-stimulation, and isotype class-switching. The HM40-3 antibody blocks the binding of CD40L (CD154) and stimulates B and dendritic cell proliferation.

Catalog Number: (75843-618)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The 1A8 monoclonal antibody specifically reacts with the 21-25 kDa glycophosphatidylinositol-anchored protein known as Ly-6G, expressed by the granulocytes from the bone marrow and periphery neutrophils. Ly-6G and Ly-6C form the Granulocyte Receptor-1 antigen (GR-1). The binding of the 1A8 antibody to the Ly-6G can be blocked by another antibody, RB6-8C5, which also recognizes Ly-6C. While 1A8 is specific for only Ly-6G, RB6-8C5 also binds to Ly-6C.BG Violet 450 conjugate is an alternative to the Pacific Blue, eFluor 450, or BD Horizon V450 dyes. It is excited by the violet (405 nm) laser, with a peak emission of 450nm.

Catalog Number: (75843-616)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The 1A8 monoclonal antibody specifically reacts with the 21-25 kDa glycophosphatidylinositol-anchored protein known as Ly-6G, expressed by the granulocytes from the bone marrow and periphery neutrophils. Ly-6G and Ly-6C form the Granulocyte Receptor-1 antigen (GR-1). The binding of the 1A8 antibody to the Ly-6G can be blocked by another antibody, RB6-8C5, which also recognizes Ly-6C. While 1A8 is specific for only Ly-6G, RB6-8C5 also binds to Ly-6C.

Catalog Number: (75843-650)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The H74 monoclonal antibody binds to human B7-H4, a newly discovered member of the B7 family involved with the negative regulation of T cell immunity. B7-H4 is a type I membrane glycoprotein also known as B7S1, B7X, and VCTN1. Its role in tumor progression may be to protect precancerous cells from the surveillance of the immune system. Further studies are being conducted to determine the exact B7-H4 ligand. It is reported that the H74 antibody binds to human B7-H4 transfected cells and not peripheral blood cells.

Catalog Number: (75843-670)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The H57-597 monoclonal antibody is specific for the beta chain of the mouse T cell Receptor (TCR). The crosslinking induces activation and proliferation of T cells, as a plate-bound or a soluble H57-597, or the plate-bound antibody can induce apoptosis, based on assay conditions. The beta chain of the TCR can combine with the alpha chain of the receptor to produce the alpha-beta TCR, which is expressed by the NKT cells, by the NK1.1+ thymocytes and most of the T cells. The beta chain does not react with the gamma-delta TCR-bearing cells, expressed by a small number of T cells. This antibody can be used as a phenotypic marker for the TCR beta expressing cells or for the functional purpose of TCR-mediated cell activation or apoptosis.

Catalog Number: (75843-612)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The JC12 monoclonal antibody specifically reacts with human Foxp1, a winged helix transcription factor that is expressed in almost all human tissue. In several tumor types, the gene is lost suggesting it plays a tumor suppressive role. It plays an important role in the development of the brain, lungs, thymus, and heart. Foxp1 is also involved in the development of early B cells.

Catalog Number: (75843-848)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The UCHT1 monoclonal antibody specifically reacts with the ε chain of the CD3/T lymphocyte antigen receptor complex. The CD3 complex contains γ, δ, and ε chains, and it is part of the TCR complex, expressed by all mature T lymphocytes and by the thymocyte lineage. CD3 enhances the antigen recognition by signal transduction. Unlike HIT3a, another specific antibody of CD3, the UCHT1 antibody can stain both the surface and intracellular CD3ε. The immobilized UCHT1 can cross-link with the TCR complex, enhancing cellular activation and proliferation.

Catalog Number: (75844-452)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The YB5.B8 monoclonal antibody specifically binds with human CD117 (c-kit), the 145 kDA receptor for stem cell factor (SCF) or steel factor. This tyrosine kinase protein is expressed mainly on hematopoietic progenitor, mast cells, acute myeloid leukemia cells (AML). CD117 activation promotes proliferation and cell differentiation on these cell subtypes. A lack or defect of SCF can lead to a decrease in number of hematopoietic progenitor cells and severe anemia.

Catalog Number: (75844-438)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The ACK2 monoclonal antibody specifically reacts with mouse CD117 (c-Kit receptor), a 145 kDa transmembrane tyrosine-kinase receptor encoded by the Kit gene. The c-Kit receptor, also known as stem cell factor receptor, is expressed on hematopoietic progenitor cells in adult bone marrow, in progenitors of erythroid and myeloid lineages, and precursors of B and T cells. CD117 enhances the proliferation and the differentiation of the hematopoietic progenitor cells and seems to enhance the development of T cells, as the c-Kit receptor and its ligand are expressed by the thymus.

Catalog Number: (75843-502)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The 8D4-8 monoclonal antibody specifically reacts with human IL-4, expressed by the activated T cells and mast cells. IL-4 is species-specific and stimulates the proliferation and differentiation of B lymphocytes. It upregulates the expression of IgE receptors and class II MHC antigen. The 8D4-8 antibody neutralizes the IL-4 cytokine.

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The 11B11 monoclonal antibody specifically reacts with mouse 14 kDa cytokine IL-4, expressed by the activated NKT cells and mast cells. IL-4 is species-specific and stimulates the proliferation and differentiation of B lymphocytes. It upregulates the expression of IgE receptors and class II MHC antigen.The 11B11 antibody neutralizes the IL-4 cytokine.

Catalog Number: (75843-540)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The TER-119 monoclonal antibody specifically binds to the mouse 52 kDa Glycophorin A expressed on the erythroid lineage cells, from the early proerythroblast to mature erythrocyte stages, in the fetal liver, adult bone marrow, newborn liver, yolk sac, and adult lymphoid organs. The TER-119 antibody is used, together with other antibodies, as a marker for hematopoietic lineages cells.

Catalog Number: (75843-528)

Supplier: BIOGEMS INTERNATIONAL INC.

Description: The MP4-25D2 monoclonal antibody specifically reacts with human Interleukin-4 (IL-4), expressed by the activated T cells and mast cells. IL-4 is species-specific and stimulates the proliferation and differentiation of B lymphocytes. It upregulates the expression of IgE receptors and class II MHC antigen. The MP4-25D2 is a neutralizing antibody and is reported to be cross-reactive with rhesus monkeys.