| Type | Description |
|---|---|
| Type I | reaction mediated by IgE antibodies |
| Type II | cytotoxic reaction mediated by IgG or IgM antibodies - antigen on cell surface |
| Type III | mediated by immune complexes - against soluble antigen |
| Type IV | T cell mediated |
| Type | Description |
|---|---|
| Type I | reaction mediated by IgE antibodies |
| Type II | cytotoxic reaction mediated by IgG or IgM antibodies - antigen on cell surface |
| Type III | mediated by immune complexes - against soluble antigen |
| Type IV | T cell mediated |