An immune complex is the result of a molecular interaction between an antibody and an antigen.
Formation of the immune complex
The antibody has specific affinity for a particular epitope on the antigen. This is recognised by the antibody paratope which is the part known as the variable part.
Role of the immune complex
The immune complex is an innate immune process which is designed to protect the body against non-self molecules (bacteria, viruses). The antibody antigen interaction can cause:
The immune complex involves an antibody and an antigen. © AJC1, Flickr, CC by-nc-sa 2.0