用胸苷类似物BrdU掺入法来研究直接法中和培养法中绒毛细胞的细胞周期,是一种快速实用的方法。结果显示在实验条件下,直接法中自然分裂细胞的细胞周期较长,S期延长。培养法中绒毛细胞的细胞周期与成纤维细胞相似。将绒毛支放入加有BrdU的培养液中,用直接法和培养法分别在不同时间内获取迟标 Using the thymidine analogue BrdU incorporation method to study the cell cycle of villi cells in the direct neutralization culture is a fast and practical method. The results showed that under the experimental conditions, the natural cell division in the direct method had longer cell cycle and longer S phase. The villus cells in culture have similar cell cycle to fibroblasts. Put the chorionic branch into BrdU-added culture medium, and obtain the standard solution by using the direct method and the culture method at different times