The technique of transcervical chorionic villus sampling (TCVS) was studied in 155 cases for selected abortion in the first trimester of pregnancy, and 3 kinds of suction tube were compared.

• 本文对155例早孕妇女进行了经宫颈获取绒毛方法的研究,并对三种不同来源与直径的抽吸管效果进行了对比。