Immune function is a broad research area that focuses on understanding the complex system of organs, cells, and proteins that work together to defend the body against harmful pathogens and foreign substances. Researchers in this field study how the immune system develops, how it differentiates between self and non-self, and how it responds to infections, diseases, and other threats. They also investigate how immune function can be strengthened or impaired, and how it plays a role in various health conditions, such as autoimmune disorders, allergies, and cancer. Overall, the goal of immune function research is to improve our understanding of the immune system and develop new strategies for enhancing immunity and treating immune-related diseases.