Deep Phenotyping Reveals Expansion of T Follicular Regulatory Cells and Triple Positive (CTLA4, TIGIT, PD1) Exhausted Effector Memory T Cells Characterizing the Immunosuppressive Microenvironment in Follicular Lymphoma - El Daker, Sary; Freeman, Daniel; Baik, Jeeyeon; Zhu, Menglei; Chattopadhyay, Pratip; Roshal, Mikhail; Dogan, Ahmet; Galera, Pallavi (Blood, 2021)