Fig. 1

Fruit fly Drosophila melanogaster larvae. A–E Larva irradiated with electron beam for 60 min. A, C, and D SEM images. B Schematic drawing. E TEM image. Arrowhead = extra surface layer. F–J Larva not irradiated with electron beam for 60 min. F Optical micrograph. G Schematic drawing. H and I SEM images. J TEM image. Bars = 0.3 mm (A, C, F, and H), 0.1 mm (D and I), and 0.2 μm (E and J). From Takaku et al. 2013 with permission from the publisher