对于2,4,5-T(2,4,5-trichlorophenoxyacetic acid)集中争论的一个问题是其致畸性,几年前有人提出其致畸作用是由于其中混入2,3,7,8-四氯二苯并-对-二噁英(2,3,7.8-tetrachlorodibenzo-p-dioxin,简称二噁英)。但是不久就弄清了在实验中所观察到的畸形,不完全是由于二噁英所引起的。妊娠小鼠,由皮下给以二噁英或含有不超过0.05 ppm二噁英的2,4,5- One of the problems with the 2,4,5-T (2,4,5-trichlorophenoxyacetic acid) concentration controversy is its teratogenicity. A few years ago it was proposed that its teratogenic effect was due to the incorporation of 2,3,7,8- Tetrachlorodibenzo-p-dioxin (2,3,7,8-tetrachlorodibenzo-p-dioxin, referred to as dioxin). However, it soon became apparent that the deformities observed in the experiment were not entirely due to dioxins. Gestational mice given either subcutaneously dioxins or 2,4,5-dioxins containing no more than 0.05 ppm of dioxins,