In this report the EEG of 53 patients with mental development retardation was studied comparatively before and after receiving fetal brain transplantation.

对53例精神发育迟滞患者胎脑移植术前后的脑电图进行对比研究。

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Even the mild variety has symptoms that include abnormal skeletal development and, sometimes, slight mental retardation.

虽然轻度的粘脂糖症的症状只是骨骼不正常发育，有时仅仅是轻度的智力缺陷。

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Mn deficiency during pregnancy may impede the development of fetal bone can also affect the synthesis of hormones, leading to severe mental retardation fetus.

孕期缺锰会阻碍胎儿骨骼发育，也可影响激素的合成，导致胎儿严重智力低下。

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These complications are the primary cause of serious long-term brain damage in premature babies and are associated with the subsequent development of cerebral palsy and mental retardation.

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