Immunoglobulin G (IgG) is the most abundant Ig isotype in serum, making up approximately 80% of all serum Immunoglobulins. In humans, there are four subclasses of IgG, with the highest serum concentrations of IgG1 followed by IgG2, IgG3, and IgG4. In mice, the IgG subclasses are defined as IgG1, IgG2a/c, IgG2b, and IgG3. IgG3 binds to Fc receptors with high affinity and is a good complement activator.
| Alternative analyte names: | Immunoglobulin G3, IgG3 |
| Cell types: | B cell |
| Products: | Click here to see our portfolio of IgG3 products. |