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对３８名精神发育迟滞儿童，４４名边缘型儿童和４７名正常儿童的血清总蛋白和白蛋白进行测定。结果表明，弱智儿童的血清总蛋白和白蛋白值均低于边缘型和正常儿童，但无显著性差异（Ｐ＞０．０５），弱智儿童蛋白质营养不良，其发病率（３８．８％）高于边缘型（３２．８％）和正常型（２８．０％），并探讨了蛋白质营养不良的病因。
Serum total protein and albumin were measured in 38 children with mental retardation, 44 marginal children and 47 normal children. The results showed that the serum total protein and albumin values of mentally retarded children were lower than those of marginal and normal children, but no significant difference (P> 0.05). The incidence of malnutrition in children with mental retardation was 38.8% Higher than the marginal type (32.8%) and normal type (28.0%), and explored the etiology of protein malnutrition.