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从胎脑、颌下腺、肌肉组织中制备神经活素。其性能同脑活素一样：可促进Ｐｃ１２细胞的突起生长，提高其胞浆内乳酸脱氢酶活性，电泳显示二者有相同的三条带。提示：神经活素有可能替代脑活素应用于临床。
Preparation of neurotrypsin from fetal brain, submandibular gland, muscle tissue. Its performance is the same as that of cerebrolysin: It can promote the process of neurite outgrowth in Pc12 cells and increase the activity of lactate dehydrogenase in its cytoplasm. Electrophoresis shows the same three bands. Reminder: Neurotoxin may be used in clinical alternative to cerebrolysin.