AIM: To observe the expression of recombinated adeno-associated virus (rAAV) 1/2-lacZ vector gene in umbilical mesenchymal stem cells cultured in vitro.

• 目的:观察由重组腺相关病毒1/2载体携带的LacZ报告基因在体外培养的脐血间质干细胞中的表达情况。