What are categories of immunopathologic responses?

◦ Inactivation/activation antibody reactions ◦ Cytotoxic or cytolytic antibody reactions ◦ Immune-complex reactions ◦ Allergic reactions ◦ T-cell cytotoxic reactions ◦ Delayed HS reactions ◦ Granulomatous reactions ➢ This system accounts for the fact that multiple components of the immune system can be involved in various types of HS reactions