Expressing mahjUAS.Tag:MYC under the control of Scer\GAL4insc-Mz1407 results in the early larval brain (6h after larval hatching) showing signs of premature neuroblast reactivation: neuroblasts show a significant increase in cell divisions (both DNA replication/EdU staining and Mitosis/phospho-H3) and show cellular processes less frequently than controls.