Ubiquitin‐Conjugating Enzyme Ubc13 in Macrophages Suppresses Lung Tumor Progression Through Inhibiting PD‐L1 Expression

Tumor cell-intrinsic ubiquitin-conjugating enzyme Ubc13 promotes tumorigenesis, yet how Ubc13 in immune cell compartments regulates tumor progression remains elusive. Here, we show that myeloid-specific deletion of Ubc13 (Ubc13