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The human CD64 Fc blocking antibody (M22 Fc blocking antibody) is an anti-human Fc receptor antibody for human FcR blocking reagent. Various isotypes are available for certain applications. Condition of sample preparation and optimal sample dilution should be determined experimentally by the investigator.
Price/availability/specifications subject to change without notice. Unless otherwise indicated, our catalog and customized products are for research use only and not intended for human or animal diagnostic or therapeutic use.
Phone: 1-617-401-8149
Fax: 1-617-606-5019
Email: message@sydlabs.com
Or leave a message with a formal purchase
order (PO) Or credit card.
The recombinant M22 or H22 antibody binds to human and non-human primate CD64 or FcγRI, a cluster of differentiation molecule found on monocytes, macrophages, and neutrophils. CD64 plays a central role in macrophage antibody-dependent cellular cytotoxicity and clearance of immune complexes, and is a candidate biomarker for bacterial infection and sepsis.
Recombinant mouse IgG1 Monoclonal Antibody.
Clone: M22.
Isotype: Mouse IgG1 kappa.
Source: The anti-human CD64 monoclonal antibody (clone: M22) was produced in mammalian cells.
Specificity/Sensitivity: The in vivo grade recombinant mouse monoclonal antibody (clone: M22) specifically binds to human CD64.
Applications: ELISA, flow cytometry, neutralization, functional assays such as bioanalytical PK and ADA assays, and those assays for studying biological pathways affected by the human CD64 protein. Human Fc receptor blocking solution, human Fc receptor blocking reagent, and human Fc receptor blocking antibody.
Form of Antibody: 0.2 uM filtered solution, pH 7.4, no stabilizers or preservatives.
Endotoxin: < 1 EU per 1 mg of the protein by the LAL method.
Purity: >95% by SDS-PAGE under reducing conditions and HPLC.
Recombinant human IgG1 monoclonal antibody with Fc silent mutation.
Clone: H22.
Isotype: Human IgG1 kappa.
Source: The anti-human CD64 monoclonal antibody (clone: H22) was produced in mammalian cells.
Specificity/Sensitivity: The in vivo grade recombinant mouse monoclonal antibody (clone: H22) specifically binds to human CD64.
Applications: ELISA, flow cytometry, neutralization, functional assays such as bioanalytical PK and ADA assays, and those assays for studying biological pathways affected by the human CD64 protein. Human Fc receptor blocking solution, human Fc receptor blocking reagent, and human Fc receptor blocking antibody.
Form of Antibody: 0.2 uM filtered solution, pH 7.4, no stabilizers or preservatives.
Endotoxin: < 1 EU per 1 mg of the protein by the LAL method.
Purity: >95% by SDS-PAGE under reducing conditions and HPLC.
Shipping: The antibody is shipped with ice pack. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
12 months from date of receipt, -20 to -70°C as supplied.
1 month from date of receipt, 2 to 8°C as supplied.
The most popular human Fc blocking reagents include:
Anti-human CD16 (clone 3G8), and CD32 (Clone IV.3): for flow cytometry, immunohistochemistry (IHC), and immunoprecipitation (IP). It is highly specific for FcγRII (CD32) and FcγRIII (CD16), and reduces background staining; it may not block all Fc receptors. Clones 10.1, and M22 or H22 are the most widely used anti-human FcγRI (CD64) clone for Fc blocking in flow cytometry and functional assays. It prevents non-specific Fc receptor binding on monocytes, macrophages, and dendritic cells, improving antibody specificity.
Purified human IgGs or mixes of human isotype controls: for general Fc blocking in IHC and immunofluorescence (IF). It is cheap and easy to use but it is less specific, and may even introduce unwanted immunoglobulins. Syd Labs supply various human IgG isotype controls.
Normal mouse serum, purified mouse IgG or isotype controls: for flow cytometry. It can serve as a control to block Fc receptors but it is non-specific for Fc receptors. It is cheap and easy to use but it is less specific, and may even introduce unwanted immunoglobulins. Our recombinant mouse IgG antibody mixes are affordable; the ratio of various IgGs is optimized and adjustable without any unwanted immunoglobulins.
Bovine Serum Albumin (BSA) or FBS: for general blocking in Western Blot (WB) and IHC. They are readily available to reduce non-specific binding but less effective at Fc receptor blocking.
Commercial Fc blocking solutions: for flow cytometry, IHC, and functional assays. They are normally pre-optimized and highly effective but more expensive than DIY solutions.
Best choice of human Fc blocking reagents based on your application are:
For flow cytometry: anti-human CD16 (Clone 3G8), CD32 (Clone IV.3), and CD64 (Clone 10.1, and M22 or H22).
For Immunohistochemistry (IHC) and Immunofluorescence (IF): Normal mouse serum, purified mouse or human IgGs or isotype controls or commercial Fc blocking kits. Our recombinant mouse IgG antibody mixes and recombinant human IgG isotype controls are affordable; the ratio of various IgGs is optimized and adjustable without any unwanted immunoglobulins.
For Western Blot and ELISA: BSA or FBS.
For functional assays (e.g., blocking Fc-mediated effects): Commercial Fc blocking reagents.
Syd Labs provides the following in vivo grade recombinant anti-human CD16, CD32, and CD64 monoclonal antibodies:
Recombinant Anti-human CD16 monoclonal antibody (Clone: 3G8)
Recombinant Anti-human CD32 monoclonal antibody (Clone: IV.3)
Recombinant Anti-human CD64 monoclonal antibody (Clone: H22)
Syd Labs provides the following in vivo grade recombinant anti-mouse CD16, CD32, and CD64 monoclonal antibodies:
Recombinant Anti-mouse CD16/CD32 monoclonal antibody (Clone: 2.4G2)
Syd Labs provides the following recombinant anti-human CD16, CD32, and CD64 monoclonal antibodies for flow cytometry:
Recombinant Anti-human CD16 monoclonal antibody (Clone: 3G8) for flow cytometry
Recombinant Anti-human CD32 monoclonal antibody (Clone: IV.3) for flow cytometry
Recombinant Anti-human CD64 monoclonal antibody (Clone: H22) for flow cytometry
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