IL19 and glioblastoma: Next, we identified cell types with high expression of Il-19 in the GBM microenvironment, which included human and murine GBM cells (GBM8401, GBM8901, U87, and GL261) and two tumor-infiltrating subsets (microglia-like cells and MDSCs) in GL261 tumor-bearing mice (Fig. 1E).