Downregulation of PGRMC1 During ESC in vitro Decidualization.” This seems to be the next section heading, in which case it should follow a line break, and say: “3.2.
The conclusion has been verified by other 2-3 articles, and the design of this study is not rigorous enough. It is suggested to add cell lines or normal endometrial cells for verification. If further mechanism exploration is carried out, the research will be more complete and persuasive.