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。
2.
The model may be used not only to simulate the process , but also to provide explanations why the process is so ; here we give an explanation of such a process . we showed that pka increased the threshold 0 our model might be used to simulate and explain the normal oo - cyte maturation process , and next , we simulated several experiments and compare results observed in our simulation with those observed in experiments . quantitative models could be well used to simulate kinase activity changes in xenopus oocyte maturation 模型可以用来模拟这样的卵成熟的过程，也就说明了这个模型在一定程度上是符合卵成熟过程的真实情况的，但是，如果仅仅是模拟，发挥不出模型的真正作用，模型的作用是让人们在模拟这样的卵成熟过程的同时，通过这样的一个模型工具深人的理解卵成熟的机制我们通过对模型进行分析发现： pka可以升高mpf激活的总的cyclinb阈值，从而使卵停留在gz期
