PD‐L1+ macrophage and tumor cell abundance and proximity to T cells in the pretreatment large B‐cell lymphoma microenvironment impact CD19 CAR‐T cell immunotherapy efficacy oleh Alexandre V. Hirayama, Jocelyn H. Wright, Kimberly S. Smythe, Salvatore Fiorenza, Akira N. Shaw, Jordan Gauthier, David G. Maloney, Kikkeri N. Naresh, Cecilia C. S. Yeung, Cameron J. Turtle