The following points highlight the two important immunological techniques in antigens and antibody. The techniques are: 1. Radio-Immuno Assay (RIA) 2. Enzyme-Linked Immunosorbent Assay (ELISA). Technique # 1. Radio-Immuno Assay (RIA): One of the most sensitive techniques for detecting antigen or antibody is Radio-immuno assay (RIA). History: The technique was first introduced by two endocrinologists, […]