(H-J) Age-synchronized posterior midguts of control (esgReDDM>, H) and p35 overexpression in stem and progenitor cells (esgReDDM>p35, p35 I and J) at 7 days after temperature shift. Arrows in (H, I) point to newly differentiated ECs. In (J), tumour mass is found in the anterior midgut. Data information: Scale bars, 50µm. 