Summary
Pregnant Swiss albino mice were exposed to low doses of X-rays (∼9 mGy) in the range used for diagnostic exposure, on day 3.5 of gestation (preimplantation period), day 6.5 (early organogenesis period) or day 11.5 (late organogenesis period). The fetuses were examined on the 18th day of gestation. Exposure at 3.5 days post coitus (d.p.c.) resulted in a significant increase in prenatal mortality, and an increased incidence of retarded fetuses was observed after exposure at 3.5 and 6.5 d.p.c. The major effect of exposure at 11.5 d.p.c. was a significant decrease in the fetal head size and brain weight.
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Devi, P.U., Hande, M.P. Effect of low dose of 70 kVp X-rays on the intrauterine development of mice. Experientia 46, 511–513 (1990). https://doi.org/10.1007/BF01954250
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DOI: https://doi.org/10.1007/BF01954250