Conclusion The proliferation and differentiation of costal chondrocytes from silence zone to bone zone of rabbits is a gradual procedure, in which apoptosis may play an important regulatory effect.

• 结论：家兔肋软骨生长板软骨细胞从静止区到骨化区细胞的增殖和分化是一个渐进过程，在此过程中凋亡可能起着重要的调节作用。