Fig. 4

tdn8 insertion showed increased reporter gene expression. Results of the in vivo enhancer reporter assays for A tdn8, B FBti0018868, and C FBti0061506. Normalized expression levels of the lacZ reporter gene in transgenic female guts with (red) and without (grey) the candidate TE insertions are shown. β-GAL immunostaining (green), and DAPI staining (grey) of guts from transgenic females with and without each candidate TE insertions is also shown. Scale bars represent 500 μm