Fig. 4From: Drosophila mitochondrial topoisomerase III alpha affects the aging process via maintenance of mitochondrial function and genome integrityMembrane aggregates from degenerated mitochondria are observed in the indirect flight muscle of M1L flies. EM images of the indirect flight muscles from rescued (a, c) and M1L (b, d) flies at 1 (a, b) and 5 weeks old (c, d). Magnified views of the boxed regions are shown below each panel. Arrows indicate the degenerated mitochondriaBack to article page