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

D和E.24小时,缩有碎裂(箭头)和固缩。

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的软，并见明显固缩、碎裂等凋亡形态学特征。