Comparison of the level of neomycin resistance gene in the nucleus pulposus tissues of each group: There was no significant difference between the GFP transplantation group and BMP-GFP cell transplantation group at months 1, 3 and 6(P > 0.05).

• 各组髓核组织内新霉素抗性基因表达水平比较:绿色荧光蛋白细胞移植组及BMP-绿色荧光蛋白细胞移植组术后1；3；6个月组间及组内比较；差异均无显著性意义(P>0.；05)。