HBB and neoplasm: Putative non-intronic enhancers that were present in at least 4 out of 5 tumor ATAC-Seq samples were cloned upstream of the mouse beta-globin basal promoter (an element previously shown to have minimal detectable intrinsic cell-type-specific activity) driving EGFP27, within a Tol2 vector (plasmid 394 from the Tol2 Kit28) to enable mosaic integration into the zebrafish genome.