INS IGHTS | PERSPECTIVESIMMUNOTHERAPYRecruiting T cells in cancer immunotherapyT cell dynamics reveal that immunotherapy responses may rely on peripheral T cellsBy Kathryn E. Yost1, Howard Y. Chang1,2, frequency following CTLA-4 blockade cor- blood compared with the TME, suggesting Ansuman T. Satpathy3 relates with clinical response (2). Given its that T cells may be activated peripherally expression, CTLA-4 blockade has also been and then recruited to the tumor (7). mmunotherapies that enha...