Cross sections of the pupal wing epithelium induced by injection of 20E.

The pupal-wing epithelium of females (A–D) and males (E–H). Pupal wing epithelium of females (A) and males (E) on Day 6 after injection of 6 µl ethanol. Pupal-wing epithelium of females on Day 6 (B), Day 8 (C) and Day 11 (D) after injection of 5.4 µg 20E. Phagocytes (white arrows) and apoptotic-body-like structures (black arrows) are visible (D). Pupal-wing epithelium of males on Day 6 (F), Day 8 (G) and Day 11 (H) after injection of 5.4 µg 20E. Scale is visible in the pupal epithelium (F, G, H). BL, basal lamina; P, phagocyte; S, scale; T, trachea; t, tracheole. Scale bar  = 20 µm.