Antigenicity

1. Antigenicity is the term used to define whether and how well the substance attaches to immune cells. 2. Mechanism of antigenicity is T cell activation and B cell activation. 3. The small area of chemical grouping on the antigen molecule that determines specific immune response is called an antigenic determinant. 4. Characters of antigenicity include Foreignness, Molecular Size Organ Specificity and Auto-specificity.