应用自由坠落重物撞击法建立脑和脊髓损伤动物模型，免疫组织化学方法检测各组骨痂中ngf的表达。
The animal models were established by free weight dropping and knocking method, expressions of NGF in bony callus were determined by immunohistochemical assay.
应用自由坠落重物撞击法建立脑和脊髓损伤动物模型，免疫组织化学方法检测各组骨痂中ngf的表达。
The animal models were established by free weight dropping and knocking method, expressions of NGF in bony callus were determined by immunohistochemical assay.
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