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1 材料和方法 1.1 材料 Balb/c小鼠140只,体质量18g～20g,9～10周龄;动物随机分为对照组,毫米波照射组,~(60)Co-γ射线照射组,~(60)Co-γ射线+毫米波照射;每组5只。 1.2 方法 ①毫米波照射:623A型毫米波治疗仪,选频率为36.11GHz,功率密度为10mW/cm~2,连续输出毫米波辐照小鼠腰背部皮肤(用剪刀去背毛2cm×2cm大小的区域),每天辐照1次,每次30min,共5d。②γ射线照射:~(60)Co-γ射线全身照射,剂量率为136.5cGy·min~(-1),剂量620cGy,动物离照射源中心距离1.7m。③γ射线+毫米波照射:即~(60)Co-γ射线照射后5h进行第1次毫米波照射,毫米波照射、正常对照组的假照射及γ射线+毫米波照射同步进行,小鼠照射后8d活杀,分别剖取肝、
1 Materials and methods 1.1 Materials Balb / c mice 140, body weight 18g ~ 20g, 9 to 10 weeks of age; animals were randomly divided into control group, millimeter wave irradiation group, ~ (60) Co-gamma irradiation group, (60) Co-gamma rays + millimeter wave irradiation; 5 per group. 1.2 Methods ① millimeter wave irradiation: 623A millimeter wave therapy apparatus, the frequency of 36.11GHz election, the power density of 10mW / cm ~ 2, continuous output of millimeter wave irradiation on the skin of the back of the mouse (with scissors to back hair 2cm × 2cm size Of the area), irradiated once a day, every 30min, a total of 5d. ②γ-ray irradiation: ~ (60) Co-γ-ray whole body irradiation dose rate of 136.5cGy · min -1, the dose of 620cGy, animals away from the center of the irradiation source 1.7m. (3) γ-ray + millimeter wave irradiation: the first millimeter-wave irradiation and millimeter-wave irradiation were performed 5h after irradiation with ~ (60) Co-γ rays, and the sham irradiation and γ- After 8 days to kill live, were taken liver,