Gupta S, Seth A K, Gupta A, Gavane A G
Satellite Hospital, Sethi Colony, India.
J Pediatr. 1993 Jul;123(1):139-41. doi: 10.1016/s0022-3476(05)81558-6.
Transplacental passage of fluorides was studied in 25 randomly selected neonates. Blood samples collected simultaneously from the mother and the umbilical cord showed that average fluoride concentration in the cord blood was 60% of that in mother's blood. When concentration in the mother's blood exceeded 0.4 ppm, the placenta acted as a selective barrier.
对25名随机挑选的新生儿进行了氟化物经胎盘转运的研究。同时从母亲和脐带采集的血样显示，脐带血中的氟化物平均浓度为母亲血液中氟化物平均浓度的60%。当母亲血液中的氟化物浓度超过0.4 ppm时，胎盘就起到了选择性屏障的作用。
