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近十几年来，各国学者应用人胎脑组织等已制备出多种神经营养因子，如神经生长因子（NGF）、腺苷、热休克蛋白等。但上述神经因子大多为肽类物质，难以透过血脑屏障而发挥作用；另外是来源困难，需采用基因工程技术制备重组制品，这在一般医院现时尚难以做到。为此，我们从1992
In recent ten years, various scholars have made use of human fetal brain tissue and other neurotrophic factors have been prepared, such as nerve growth factor (NGF), adenosine, heat shock proteins. However, most of the above neurological factors are peptides which are difficult to work through the blood-brain barrier. In addition, it is difficult to obtain a recombinant product by genetic engineering, which is hard to do in general hospitals. To this end, we from 1992