目的：探讨利用母血循环中胎儿细胞进行产前诊断的最佳采血时间。

Objective: To investigate the optimum time of maternal blood sampling for prenatal diagnosis with fetal cells.

youdao

外周血循环中中性粒细胞数在用药前和各时间点没有显著变化。

There was no change of circulating neutrophil counts before treatment and at several time point of posttreatment.

youdao