CD274 and neoplasm: Notably, treatment with αPD-L1 (clone MIH5) resulted in significantly decreased staining of PD-L1 (clone MIH5 or 10F.9G2) in HSPCs of mice inoculated with either non-immunogenic (Figure 2F) or immunogenic tumor cells (Figure 2G), pointing to specific targeting of the HSPC compartment.