Method ANP cDNA transfected CHO cells were encapsulated in PCL tubes and levels of ANP secreted were detected.

• 方法将人ANP基因(cDNA)转染入CHO细胞,然后将细胞包被在聚己内酯(PCL)管内形成微囊,并检测转基因CHO细胞长时间存活情况和分泌的ANP。