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Objective: To examine the effects of rat marrow stromal cells (rMSCs) on gene expression of local brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) after injection of rMSCs into Cistern Magnum of adult rats subjected to traumatic brain injury(TBI).Results: Group cell transplantation had higher BDNF and NGF gene expressions than Group saline control during a period of less than 3 weeks (P