Dand E.24h,shrinkage of nuclei with karyorrhexis(arrow)and pyknosis.

D和E.24小时,细胞核有核碎裂(箭头)和固。

The senescent chondrocytes were distributed in the central zone whereapoptotic morphological characteristics obviously appeared, such as pyknosis, karyorrhexis.

气软中央带多见衰老软细胞，并见明显核固、核碎裂等细胞凋亡形态学特征。