以前的试验表明螟铃畏能引起小鼠骨髓微核率和染色体畸变率增加,在代谢研究中表明~(35)S-螟铃畏可通过胎盘传递给胎鼠。为进一步阐明螟铃畏能否经胎盘对胎鼠造成危害,以胎鼠肝的微核试验进行研究。实验动物用昆明种小鼠,设螟铃畏100mg/kg、50mg/kg 组)每一剂量分别做骨髓和胎肝微核)、食油对照组和环磷酰胺阳性对照组(30mg/kg)。小鼠交配后以查到阴栓 Previous studies have shown that borer fear can cause bone marrow micronucleus rate and chromosome aberration rate increased in mice metabolic studies showed that ~ (35) S stem borer can be transmitted through the placenta to the fetus. In order to further elucidate whether the disease caused by aphid in the fetus through the placenta on the fetal rat harm to fetal rat liver micronucleus test study. Experimental animals were used Kunming mice were set borer daidzein 100mg / kg, 50mg / kg group) for each dose of bone marrow and fetal liver micronuclei), oil control group and cyclophosphamide positive control group (30mg / kg). Mating mice to find the vaginal plug