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Invitrogen™ Mouse IgG Isotype Control

Product Code. 10757813
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Product Code. 10757813 Supplier Invitrogen™ Supplier No. 10400C
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Description

Mouse Polyclonal Isotype Control

Mouse IgG Isotype Control for Flow, Ctrl

The isotype of a primary antibody and the application it is being used in can result in background staining. Primary antibody background noise can be caused by binding to Fc receptors on target cells; by non-specific interactions with cellular proteins, carbohydrates, and lipids; or by cell autofluorescence. Isotype control antibodies can act as negative controls to help differentiate non-specific background signal from specific antibody signal because they have no relevant specificity to a target antigen. While isotype controls are most commonly used in flow cytometry, they are useful in other applications such as chromatin immunoprecipitation (ChIP), immunohistochemistry, and gel shifts. Isotype controls should match with the primary antibody's species and isotype so that the level of specific staining by the primary antibody may be accurately determined. If using directly labeled primary antibodies, the isotype control works best if conjugated with the same label as the test antibody.
TRUSTED_SUSTAINABILITY

Specifications

Antigen Mouse IgG
Applications Control, Flow Cytometry
Classification Polyclonal
Concentration 3 mg/mL
Conjugate Unconjugated
Formulation PBS with 0.1% sodium azide
Gene Alias IgG1; Igh-4; Ighg1; Immunoglobulin G; immunoglobulin heavy constant gamma 1 (G1m marker); ImmunoglobulinG; VH7183
Host Species Mouse
Immunogen Normal Mouse IgG
Purification Method Purified
Quantity 5 mL
Regulatory Status RUO
Primary or Secondary Isotype Control (Primary)
Target Species Not Applicable
Content And Storage 4°C
Product Type Isotype Control
Form Liquid
Isotype IgG
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Frequently Asked Questions (FAQs)

Is an isotype control a must for flow cytometry analysis?

No. Many users are using unstained cells in combination with FMO controls to identify their positive populations.
What if I can't find the right isotype control for flow cytomtery?

The flow cytometry field is moving away from using isotype controls as they are not necessarily the most appropriate way to control for non-specific binding. Instead, they are using unstained cells to define the negative population, single stained controls to set compensation, and flow minus one (FMO) controls to set regions and gates.

You may want to consider whether using an isotype control is something you need to do. Here are some references you might want to look at:
-O'Gorman MR, Thomas J. (1999) Isotype controls-time to let go? Cytometry 38:78-80.

-Keeney M, Gratama JW, Chin-Yee IH et al. (1998) Isotype controls in the analysis of lymphocytes and CD34+ stem/progenitor cells by flow cytometry- time to let go! Cytometry 34:280-283.

-Hulspas R, O'Gorman MR, Wood BL et al. (2009) Considerations for the control of background fluorescence in clinical flow cytometry. Cytometry B Clin Cytom 76:355–364.

-Enumeration of Immunologically Defined Cell Populations by Flow Cytometry; Approved Guideline - Second Edition. Clinical and Laboratory Standards Institute, (CLSI). Document H42-A2 Volume 27 No.16, 2007.

-Clinical Flow Cytometric Analysis of Neoplastic Hematolymphoid Cells; Approved Guideline - Second Edition. Clinical and Laboratory Standards Institute, (CLSI). Document H43-A2 Volume 27 No. 11, 2007.

If you do wish to use isotype controls, we offer a wide variety of species and fluorophores, search our Web site under "isotype antibody control."

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