Quantikine Immunoassay Control Set 725 for Human B7-H3

For use with catalog number DB7H30
Catalog # Availability Size / Price Qty
QC47
R&D Systems ELISA Controls
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Quantikine Immunoassay Control Set 725 for Human B7-H3 Summary

INTENDED USE & DESCRIPTION

For use as quantitative controls for the determination of cytokine concentrations in biological fluids. Concentrations have been assigned using R&D Systems’ Quantikine® kits. Controls are prepared in diluted porcine serum with preservatives. They contain recombinant human cytokines at low, medium and high concentrations. Controls are supplied lyophilized.

STORAGE & STABILITY

Unreconstituted Controls should be stored at 2-8 °C and are stable for at least 6 months from date of receipt. Depending on the analyte of interest, reconstituted controls may be stable when stored at < -20 °C. Users should evaluate the frozen stability of the controls in their application or discard after use.

REAGENT PREPARATION

Reconstitute each vial with the volume of deionized or distilled water indicated on the product datasheet.

PROCEDURE & EXPECTED VALUES

Controls should be assayed in the same manner as unknown specimens.

The acceptable ranges for the analytes in these controls are printed on the product datasheet. Due to possible variations in techniques and methodologies, it is recommended that each laboratory determine its own target range. Laboratories using other test systems should establish their own acceptable ranges as these assays may produce different values.

TECHNICAL HINTS & LIMITATIONS OF THE PROCEDURE 

• The ranges were determined using R&D Systems’ Quantikine kits. If expected values are not obtained, verify that the lot numbers on the vials correspond with the lot numbers listed above and the correct volume of deionized or distilled water was used for reconstitution of the controls. 

• The results obtained with these controls depend upon several factors associated with methods and instrumentation. Test systems other than those supplied by R&D Systems may result in values that differ from those printed on this product datasheet.

Specifications

Source
N/A
Shipping Conditions
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Storage
Store the unopened product at 2 - 8 °C. Do not use past expiration date.
Applications
Control
Species
Human

Product Datasheets

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Background: B7-H3

B7-H3 is an immunoglobulin superfamily protein that is expressed by osteoblasts, fibroblasts, ciliated respiratory epithelial cells, anterior pituitary progenitor cells, first trimester extravillous trophoblasts, and multiple tumor cells. It is induced on activated dendritic cells (DC), skeletal muscle myocytes, and monocytes. B7-H3 can both stimulate and inhibit immune cell activation. As a co-stimulator, B7-H3 augments macrophage activation and promotes proliferation and cytokine secretion by CD4+ and CD8+ T cells. As a co-inhibitor, tumor cell B7-H3 blocks the cytolytic activity of NK cells, limits cytokine production by activated T cells, and imparts an immunosuppressive phenotype to dendritic cells. B7-H3 can interact with TREML2/TLT-2 to enhance T cell activation including the CD8+ T cell-mediated lysis of tumor cells.

Long Name
B7 Homolog 3
Entrez Gene IDs
80381 (Human); 102657 (Mouse); 315716 (Rat); 102131295 (Cynomolgus Monkey)
Alternate Names
B7H3; B7-H3; B7H34Ig-B7-H3; B7-H3B7 homolog 3; CD276 antigen; CD276 molecule; CD276; Costimulatory molecule

FAQs

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