Description: The monoclonal antibody IgE21 recognizes the immunoglobulin E class of antibodies. The natural levels of IgE in the serum are quite low, comprising only a small portion of the total immunoglobulin. IgE plays a role in allergy responses by binding to mast cells and basophils through the Fc epsilon receptor I which results in the release of histamine and other molecules. The IgE is produced by terminally differentiated plasma B cells and basophils. Like all immunoglobulins, IgE is expressed as a soluble molecule as well as a membrane bound form. IgE21 recognizes both forms.

Applications Reported: This Ige21 antibody has been reported for use in flow cytometric analysis.

Applications Tested: This Ige21 antibody has been pre-titrated and tested by flow cytometric analysis of normal human peripheral blood cells. This can be used at 5 µL (0.2 µg) per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test.

NovaFluor dyes are not compatible with DNA intercalating viability dyes. Do not use viability dyes such as propidium iodide, 7-actinomycin D (7-AAD) and DAPI. Invitrogen LIVE/DEAD Fixable Dead Cell stains are recommended for use with NovaFluor dyes.

Each NovaFluor conjugate or kit is shipped with CellBlox Blocking Buffer. Use this buffer whenever staining with NovaFluor conjugates, including single color compensation controls using cells. Use 5 µL of CellBlox Blocking Buffer per stained cell sample containing 10^3 to 10^8 cells.

NovaFluor conjugates are based on Phiton™ technology utilizing novel nucleic acid dye structures that allow for engineered fluorescent signatures with consideration for spillover and spread impacts. Learn more

Excitation: 552 nm; Emission: 755 nm; Laser: 561 nm (Yellow) Laser