■ What are Isotype Control Antibodies?
■ CrownVivo Antibody – In vivo Grade Isotype Control –
■ Product List of CrownVivo Antibody – In vivo Grade Isotype Control –
・Human
・Mouse
・Rat
■ Related Products
Isotype controls serve as negative controls for antibodies used in assays. We offer a wide range of isotype antibodies, which are useful for verifying non-specific reactions in applications such as flow cytometry (FCM) and immunoprecipitation (IP), as well as for establishing baseline settings. Isotype control antibody should be selected to match the isotype of the antibody used in your experiment.
CrownVivo Antibody – In vivo Grade Isotype Control (hereafter referred to as CrownVivo Antibody) ensures truly meaningful results that are not influenced by nonspecific or non‑antigen‑dependent effects. CrownVivo Antibody is a Functional Grade isotype control antibody manufactured for in vivo, ex vivo, and in vitro studies that require the highest level of quality. Please select the optimal isotype control that matches the host species, isotype, and subclass of your test antibody to support your research.
CrownVivo Antibodies are isotype controls with high concentration, low endotoxin levels , and no preservatives.
| CrownVivo Antibody – In vivo Grade Isotype Control – | |
|---|---|
| Clonality | Monoclonal |
| Endotoxin Level | <1 EU/mg (LAL assay) |
| Purity | >95% SDS-PAGE and SEC-HPLC* *As an exception, only Code C0005 meets the following criteria — >95% by SDS‑PAGE and >90% by SEC‑HPLC. |
| Concentration | >4 mg/ml |
| Formulation | Sterile‑filtered in PBS (40 mM KH₂PO₄, 150 mM NaCl, pH 7.4) without carrier proteins or preservatives. |
The figure shows the tumor‑suppressive effect of the Human IgG1 Isotype Control in an H22 murine hepatocellular carcinoma model. In this study, the tumor volume in the Human IgG1 Isotype Control–treated group was significantly lower than that in the PBS‑treated group. This difference clearly demonstrates that to properly analyze the tumor growth‑inhibitory effect of the antibody of interest, the comparison must be made against the Human IgG1 Isotype Control. This approach is also essential for accurately evaluating the antibody’s efficacy.
Click on the isotype to view the list of corresponding products, and click on the Code No. to view the product details.
| 100 µg | 1 mg | 5 mg | 10 mg | 20 mg | |
|---|---|---|---|---|---|
| IgG1 | C0001-1 | C0001-2 | C0001-3 | C0001-4 | C0001-5 |
| IgG1 (D265A)* | C0020-1 | C0020-2 | C0020-3 | C0020-4 | C0020-5 |
| IgG2 | C0002-1 | C0002-2 | C0002-3 | C0002-4 | C0002-5 |
| IgG3 | C0003-1 | C0003-2 | C0003-3 | C0003-4 | C0003-5 |
| IgG4 | C0004-1 | C0004-2 | C0004-3 | C0004-4 | C0004-5 |
| IgG4 (S228P)** | C0045-1 | C0045-2 | C0045-3 | C0045-4 | C0045-5 |
*Human IgG1 with D265A mutation in the heavy chain to reduce Fc receptor binding
**IgG4 engineered with S228P mutation in the hinge region to prevent Fab‑arm exchange
| 100 µg | 1 mg | 5 mg | 10 mg | 20 mg | |
|---|---|---|---|---|---|
| IgG1 | C0005-1 | C0005-2 | C0005-3 | C0005-4 | C0005-5 |
| IgG2a | C0006-1 | C0006-2 | C0006-3 | C0006-4 | C0006-5 |
| IgG2b | C0008-1 | C0008-2 | C0008-3 | C0008-4 | C0008-5 |
| 100 µg | 1 mg | 5 mg | 10 mg | 20 mg | |
|---|---|---|---|---|---|
| IgG1 | C0010-1 | C0010-2 | C0010-3 | C0010-4 | C0010-5 |
CrownVivo isotype control antibodies are manufactured by Crown Bioscience, Inc.
The products listed on this website are for research use only. They are not intended for diagnostic or therapeutic purposes.