Question: is pdl1 expressed on t cells?
Answer: PD-1 is a cell surface receptor expressed by activated CD4 and CD8 T cells and a variety of other immune cells [1]. ... PD-L1 can be expressed by tumor cells, tumor-associated macrophages (TAMs), myeloid derived suppressor cells (MDSCs), dendritic cells (DCs), T cells and B cells [1].