Human IgG Products

Immunoglobulin G (IgG) is an antibody that plays a role in controlling infection, neutralizing toxins, activating the classical pathway of the complement system, and more. Each individual IgG contains two identical antigen binding sites. There are four subclasses of IgG (IgG1, IgG2, IgG3, and IgG4) that have different (and sometimes opposing) properties.