H. Lee Moffitt Cancer Center & Research Institute Apr 11 2025 Researchers at Moffitt Cancer Center have found that tapping into the body's own immune system and activating a type of immune cell known as B cells, could be the key to boosting the effectiveness of tumor-infiltrating lymphocyte, or TIL therapy. Results of their study were published in the Journal for Immunotherapy of Cancer . TIL therapy starts with doctor's removing tumors from the patient. These tumors are sent to a lab, where