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作者选用体重24～26g的雄性小鼠160只,分成4组,每组40只。一组CO作用组,CO浓度500±20mg/m~3,每天吸入2小时,每周5次,共3周。二组全身振动、噪声作用组,振动频率20～30Hz,加速度3.8～4.2m/s~2,噪声强度90±5dB,每天接触4小时,共3周。三组为同样的CO与振动、噪声联合作用组。四组为对照组。
The authors selected 160 male mice weighing 24-26 g and divided them into 4 groups of 40. A group of CO action group, CO concentration 500 ± 20mg / m ~ 3, inhaled 2 hours a day, 5 times a week for 3 weeks. Two groups of whole body vibration and noise effect group, vibration frequency 20 ~ 30Hz, acceleration 3.8 ~ 4.2m / s ~ 2, noise intensity 90 ± 5dB, daily contact 4 hours for 3 weeks. Three groups for the same CO and vibration, noise joint effect group. Four groups as control group.