[Effect of low dose gamma-irradiation and cigarette smoking on growth and reflex behavior in mice]

Pregnant mice were exposed to different level of gamma-irradiation(60Co 0, 0.25, 0.5 and 1.0 Gy) and water solutions containing different contents of substance from cigarette smoke(0, 0.5, 1.0, 1.5 and 2.0 cigarette/mouse). Results showed that the effect of low dose gamma-irradiation and high concentration cigarette smoke substance could delay the appearance of four physiological markers (eye opening, pinna detachment, hair growth and tooth growth) and the acquisition of four reflexes(surface righting, air righting, virual placing and auditory orienting). A significant combined effect was also observed.