Supplementary Figure 4 from Systemic Immunotherapy of Non-Muscle Invasive Mouse Bladder Cancer with Avelumab, an Anti–PD-L1 Immune Checkpoint Inhibitor

<p>Immunohistochemical detection of CD4 and CD8 immune cell subsets in the bladders of mice treated with Avelumab, BCG or Avelumab plus BCG</p>