Recent studies have shown that the placentotoxicity of dioxin is main cause of intrauterine fetal death,which is very important to dedicate fetal death in the utero.

• 近几年研究发现二恶英的胎盘毒性是其导致宫内死亡的重要原因,对阐明环境毒物导致的宫内死亡机制及治疗有重要意义。