However , cartilage degenerative changes were found histologically and histochemically . 15 to 30 days after operation , under sem , articular cartilage surface showed collagen fibers network were exposed and broken , the typical degeneration changes of oa were observed histochemically and histologically 结果表明：术后5 10天时，在扫描电镜显示关节软骨表面的胶原网架结构完整情况下，软骨细胞及基质中蛋白多糖已有明显变化。
2.
It was show in this thesis that the po activity existed histochemically in haemo - cyte and its peripheral zone . most po were electron - dense and homogenous . prophenoloxidase is found in both plasma and haemocytes . propenoloxidase is most abundant in large granule haemocytes , a small abount is present in some small granule haemocytes and hyaline cells , or absent Po大部分均质且电子密度很高。在细胞外有异物处的po密度最大。其中大颗粒细胞周围的po阳性产物最多，小颗粒细胞和透明细胞则很少或没有。
