Introduction to Immunosensors; Antibody's Structure, Function, Orientation, Characterization and Immobilization for Immunosensor Development; Immunosensing with Electro-Active Photonic Devices; Nanostructured Based Plasmonic Device for Biosensing Applications; Current Approaches in Quantifying IgE Antibody in Allergic Diseases; Nanostructure Based Sensitive Electrochemical Immunosensors; Repetitive Immunosensors; Electrochemical Magneto Immunosensors As Fast and Efficient Tools for Point-of-Care Diagnostics; Smartphone Affinity Biosensors; Graphene Based Immunosensors; Gold Nanoparticles Interface Based Electrochemical Immunosensors for Tumor Biomarkers; Nanocomposite Based Electrochemiluminescence Immunosensors; ISFET-based Immunosensors; Advance Engineered Materials in Immunosensing for Point-of-Care Bio-analysis; Immunosensors Using Screen Printed Electrodes; Comparison of Antibodies against Aptamers as Recognition Receptors in Biosensors; Nanoimprinted Immunosensors.