答本刊今年第一期《精神发育不全,一文中谈到母体与胎儿血型不合引起胎儿溶血可使神经细胞受损的问题。现再作如下解答: 胎儿的血液通过胎盘绒毛膜与母体的血液进行气体和物质交换。在此过程中,若胎儿得自父亲遗传而来的显性抗原恰为母亲所缺少时,则此抗原进入母体后,可刺激 A The first issue of this issue of "mental retardation, one article talked about the maternal and fetal blood group caused by fetal hemolysis can damage nerve cells. Now make the following answer: The fetus’s blood through the placental chorion and maternal blood gas and substance exchange. In the process, if the fetus from the father inherited dominant antigen is just missing from the mother, then the antigen into the maternal, can stimulate