UNIT 8 Immunochemistry What is Immunochemistry? Definition:Immunochemistry is the branch of biochemistry that studies the chemical properties of immune reactions, particularly antigen-antibody interactions at a molecular level. It combines principles from immunology and biochemistry to explore and utilize the interactions between antigens and antibodies for diagnostic, therapeutic, and research purposes. Key Components in Immunochemistry: 1. Antigens (Ag): 2. Antibodies (Immunoglobulins, Ig): 2. Antigen-Antibody Interaction: Biochemical Principles in Immunochemistry: 1. Specificity: