Immune activation is a research area that focuses on understanding how the immune system is activated in response to pathogens, toxins, and other foreign substances. This activation plays a crucial role in protecting the body from infections and diseases. Researchers in this area study the mechanisms by which immune cells recognize and respond to threats, as well as how dysregulation of immune activation can lead to various diseases such as autoimmune disorders, allergies, and cancer. Additionally, immune activation research explores ways to modulate or enhance the immune response for therapeutic purposes, such as in the development of vaccines or immunotherapies.