Dr. Susan Kaech, a leading immunologist at the Salk Institute, discusses her groundbreaking research on memory T cells and T cell exhaustion, shedding light on why they sometimes fail to provide lasting immunity. She shares insights into neuroimmunology, revealing how stress impacts T cell behavior and immune function. Kaech also reflects on her unique journey from genetics to immunology, emphasizing the importance of understanding memory in infections and cancer. A fascinating exploration of the immune system's complexity!