英语语法分析

The contents of salmon calcitonin were decreased during the storage period.

鲑鱼降钙素含量显著下降，但是仍在质量标准规定的范围内。

Calcitonin can promote the development and implantation of mouse blastocysts.

探讨降钙素对小鼠胚泡发育及植入的影响。

Calcitonin gene was synthesized according to the sequence of salmon Calcitonin gene.

根据鲑鱼降钙素基因的序列，合成了鲑降钙素基因。