👉 Immunoreactivity is a biological process where an immune system detects and responds to specific molecules or antigens, which are typically foreign substances. This process involves the activation of T cells (T lymphocytes) in response to these molecules, leading to the production of antibodies that neutralize or destroy the antigen. The term "immunoreactivity" refers to the ability of an organism to recognize and respond to its own or other organisms' antigens. It is a crucial aspect of the immune system
