TNF and glioblastoma: Given enrichment for tnfa:EGFP+ phagocytes and signatures associated with pro-inflammatory macrophages in our glioblastoma model, we decided to investigate microglia/macrophages cell dynamics in vivo using live confocal imaging following co-injection of the linearized transgene combination into tp53-/-; Tg(mpeg1.1:EGFP) zebrafish (Ellett et al., 2011).