Figure 4
Ultrastructural pathological injuries in hippocampal tissue of rats at 7 days after 1.5-GHz and 4.3-GHz microwave irradiation (scale bar = 500 nm, A–L). (A–C) S group, there were no changes in neurons, synapses or blood vessels. (D–F) C10 group, G-I: L10 group, (J–L) LC10 group, ultrastructural damage to neurons, synapses and blood vessels was observed. The yellow arrows in the figure show mitochondria (swelling, sputum rupture and cavitation); the green arrows indicate synaptic damage (blurred synaptic gap, increased postsynaptic density, and decreased number of synaptic vesicles); the red arrows indicate widening of the perivascular space. Quantitative analysis results of PSD thickness (M). Quantized data are shown as the mean ± SE. *P < 0.05, **P < 0.01 vs. control; ✩P < 0.05 LC10 vs. C10. The relative thickness of the post-synaptic compact was measured using ImageJ 1.8.0. Figure M was drawn by Graph Pad Prism 6 and the data were analyzed by SPSS 22.0.
