Morphologic changes of small intestines in rats after exposure to high power microwave observed with scanning electron microscope
AIM: To observe the morphologic changes of small intestines in rats after exposure to high power microwave (HPM). METHODS: Thirty - five male SD rats were divided into control and experimental groups. The rats in experimental group were exposed to HPM at 100 kv/m for 4 × 105 pulses. At different time points (3 h, 24 h, 72 h and 7 d) after exposure to HPM, rats were sacrificed. The samples were fixed in 30 g/L glutaralde-hyde. The morphology of small intestines was observed under scanning electron microscope (SEM). RESULTS: At 3 h after exposure to HPM, small intestinal villi arranged regularly as those in control group. At 24 - 72 h after exposure to HPM, destroyed intestinal mucosa, swelled intestinal columnar epithelium and increased secretion were observed. At 7 d after exposure to HPM, secretion and edema of the intestinal villi reduced. CONCLUSION : Scanning electron microscopy demonstrates that high power microwave exposure at different time may cause different degrees of damage in the morphologic structures in rats.
small intestinescanning electron microscopyrathigh power microwave
NETL
NSTL
万方数据
维普
