You Searched For: OPTEM


3,022  results were found

SearchResultCount:"3022"

Sort Results

List View Easy View (new)

Rate These Search Results

Catalog Number: (100243-328)
Supplier: Southern Biotechnology
Description: CD24, also known as heat stable antigen, is a phosphatidylinositol-linked cell surface glycoprotein that is expressed at all stages of B cell development and on most thymocytes. The absence of expression from mature T cells is closely associated with their maturation from CD4+CD8+CD24+ thymocytes to either CD4+CD8-CD24- or CD4-CD8+CD24- T cells. CD24 is also present on mouse granulocytes, monocytes, Langerhans cells and erythrocytes. Its ligand is P-selectin (CD62P). CD24 may play a role in regulation of B cell proliferation and differentiation, and it has been proposed that heat stable antigen promotes homotypic adhesion between B lymphocytes.


Catalog Number: (100245-472)
Supplier: Southern Biotechnology
Description: Chicken CD28 antigen is a type I transmembrane monomeric glycoprotein which does not contain the cysteine residues that form disulfide-linked covalent homodimers found in the mammalian counterpart. This may reduce the avidity of binding to individual ligand molecules expected to be present on antigen presenting cells. Peripheral γδ+ T cells are CD28 negative. Monoclonal antibodies against CD28 have a costimulatory effect on T cells stimulated by phorbol myristate acetate (PMA), concanavalin A, or monoclonal antibodies against the avian T cell receptor (TCR). Both Vβ1- and Vβ2-expressing cells respond equally well to stimulation with anti-CD28 in combination with PMA. These responses are resistant to cyclosporin A but inhibited by herbimycin A suggesting that CD28 employs a signaling pathway at least partly distinct from that triggered by TCR/CD3. The monoclonal antibody AV7 also reacts with turkey CD28 as demonstrated by flow cytometry.


Catalog Number: (100246-544)
Supplier: Southern Biotechnology
Description: CD26, also known as dipeptidyl peptidase (DPP IV), is a 110 kDa type II integral membrane glycoprotein that is primarily expressed by CD3+ medullary thymocytes and peripheral T cells. CD26 is serine protease that is also associated with T cell activation and proliferation, cell to cell adhesion, and HIV infection.


Catalog Number: (103265-166)
Supplier: Southern Biotechnology
Description: Alexa Fluor 647 Anti-Human IgD antibody for use in flow cytometry and immunohistochemistry assays.


Catalog Number: (100245-140)
Supplier: Southern Biotechnology
Description: Purified Rabbit Anti-Goat IgG(H+L) antibody for use in ELISA, immunohistochemistry / immunocytochemistry, and western blotting assays.


Catalog Number: (100244-420)
Supplier: Southern Biotechnology
Description: Goat Anti-Rat Ig-Biotin antibody with minimal reactivity to mouse proteins for use in ELISA, flow cytometry, immunohistochemistry / immunocytochemistry, and western blotting assays.


Catalog Number: (100242-660)
Supplier: Southern Biotechnology
Description: Goat F(ab’)2 Anti-Mouse IgG1-PE antibody with minimal reactivity to human proteins for use in flow cytometry assays.


Catalog Number: (100242-406)
Supplier: Southern Biotechnology
Description: Purified Anti-Mouse IL-6 antibody for use in flow cytometry, immunohistochemistry / immunocytochemistry, immunoprecipitation, ELISA, ELISpot, and multiplex assays.


Catalog Number: (100244-588)
Supplier: Southern Biotechnology
Description: HRP Anti-Rat IgG1 antibody for use in ELISA, immunohistochemistry, and ELISpot assays.


Catalog Number: (100243-358)
Supplier: Southern Biotechnology
Description: The IL-2 receptor (IL-2R) exists in three alternative forms made up from the individual components of CD25, CD122, and CD132. CD25 represents the low affinity α chain of the IL-2R, a type I transmembrane glycoprotein containing two CCP domains. It is rich in O-linked carbohydrates and has a short cytoplasmic tail. CD25 is expressed on activated T cells, B cells, NK cells, and monocytes of all mouse strains tested. Expression of CD25 on activated T lymphocytes is transitory and endogenously regulated. CD25 is expressed on precursor B cells in bone marrow. Its expression is initiated by functional rearrangement and expression of IgM heavy chain genes and is down-regulated when immature B cells mature and express IgD. It is expressed at a higher level on CD4+CD8+ thymocytes. It is also expressed on cultured epidermal Langerhans cells. The biochemical features of murine CD25 have been characterized in detail. The 3C7 monoclonal antibody reacts with an epitope of CD25 which is distinct from that recognized by clone 7D4. 3C7, used in combination with 7D4 in culture, results in higher levels of inhibition of proliferation driven by IL-2 and generation of alloreactive CTL than either of these monoclonal antibodies alone.


Catalog Number: (100246-188)
Supplier: Southern Biotechnology
Description: CD16, a member of the immunoglobulin superfamily, is a 50-65 kDa glycoprotein found as both a transmembrane and GPI-linked form. The transmembrane form of CD16 is expressed on NK cells, granulocytes, macrophages, and mast cells but not on eosinophils. The GPI-anchored type of CD16 is found only on neutrophils. CD16 is involved in NK activation and signal transduction.


Catalog Number: (100242-990)
Supplier: Southern Biotechnology
Description: Protein tyrosine residues are phosphorylated as a result of intracellular protein kinase activation (e.g., via growth factors) during normal growth and development and in oncogenesis. The most abundant population of target proteins for tyrosine phosphorylation is cell surface glycoproteins. Antibodies to phosphotyrosine enable the detection, isolation, and characterization of proteins containing phosphotyrosine. The monoclonal antibody PY20 prevents internalization of activated receptors (e.g., EGFR) when microinjected into cells. The affinity of PY20 for phosphotyrosine is approximately 10-6 to 10-7 M. PY20 binding to phosphorylated tyrosines can be inhibited by free phosphotyrosine and phenylphosphate but not by phosphoserine, phosphothreonine, or free phosphate.


Catalog Number: (103254-994)
Supplier: Southern Biotechnology
Description: APC Anti-Mouse IgA antibody for use in flow cytometry assays.


Catalog Number: (100245-506)
Supplier: Southern Biotechnology
Description: Biotin Anti-Chicken IgM antibody for use in flow cytometry and immunoprecipitation assays.


Catalog Number: (100245-534)
Supplier: Southern Biotechnology
Description: Purified Anti-Chicken Lambda antibody for use in flow cytometry, immunohistochemistry / immunocytochemistry, western blotting, and immunoprecipitation assays.


Catalog Number: (103264-546)
Supplier: Southern Biotechnology
Description: CD5, also known as Lyt-1, is a monomeric type I transmembrane glycoprotein expressed on thymocytes, T lymphocytes, and a subset of B lymphocytes, but not on natural killer (NK) cells. It has been identified as the major ligand of the B-cell antigen CD72. The frequency of CD5+ B cells exhibits strain-dependent variation, and the phenotypic, anatomical, functional, developmental, and pathological characteristics of the CD5+ B cells suggest that they may represent a distinct lineage, known as B-1 cells. Binding of CD5 on the T cell surface can augment alloantigen- or mitogen-induced lymphocyte proliferation and induces increased cytosolic free calcium, IL-2 secretion, and IL-2R expression. It has been proposed that CD5 negatively regulates signal transduction mediated by the T-cell and B-cell receptors.


Inquire for Price
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
In order to process your orders without delay, we request that you provide the required business documentation to purchase this product.

To order chemicals, medical devices, or other restricted products please provide identification that includes your business name and shipping address via email CMD_NA@vwr.com or fax 484.881.5997 referencing your VWR account number . Acceptable forms of identification are:

  • State issued document with your organization's Federal Tax ID Number
  • State issued document with your organization's Resale Tax ID Number
  • City or County issued Business License
  • State Department of Health Services License
  • Any other ID issued by the State that includes the business name and address

* Please note if your account is within the State of California two of these pieces of identification will be required.
VWR will not lift restrictions for residential shipping addresses.

-Additional Documentation May be needed to purchase this item. A VWR representative will contact you if needed.
This product has been blocked by your organization. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
This product is no longer available. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service at 1-800-932-5000.
1,985 - 2,000 of 3,022
no targeter for Bottom