However, the G-MDSC/BC xenografts contained slightly larger vessels (>70 μm2) with a defined lumen than the blood vessels present in the control BC xenografts (Figs 4C and S3A), possibly with a slightly lower level of PDGFRβ expression in the G-MDSC transplanted xenograft pericytes, although not significant (Fig S3B). The gene discussed is PDGFRB; the disease is breast cancer.