At the RNA level, there was no difference between tumors from WT and pl-PDGFB KO mice with respect to PDGFB expression (Figure 2C), demonstrating that the reduced level of tumor-associated PDGFB in pl-PDGFB KO mice was not due to changes in the transcriptional level in cells residing in the TME. Here, PDGFB is linked to neoplasm.