Fig. 7

Acheta domesticus midgut epithelium in control (A,B) and experimental groups GO2Ag4 (C), GO20Ag40 (D), GO200Ag400 (E,F), and GO200Ag4000 (G,H) after 5 days (/5D) of exposure to GO-AgNPs. Mitochondria (m), nuclei (n), nucleoli (nu), patches of heterochromatin (arrows), cisterns of RER (RER), autophagic structures (au), vacuoles (v). TEM. (A) Scale bar = 0.8 μm. (B) Scale bar = 1.2 μm. (C) Scale bar = 0.9 μm. (D) Scale bar = 0.7 μm. (E) Scale bar = 1 μm. (F) Scale bar = 0.9 μm. (G) Scale bar = 0.9 μm. (H) Scale bar = 0.7 μm.