Fig. 5From: Transcutaneous electrical acupoint stimulation improves endometrial receptivity resulting in improved IVF-ET pregnancy outcomes in older women: a multicenter, randomized, controlled clinical trialChanges in serum sex hormones of women on the theoretical implantation day. Histograms showing serum estrogen A and progesterone B levels 3 days after TEAS intervention. The TEAS group had increased serum levels of progesterone but not estrogen. Data are expressed as the mean ± S.E., with ***P < 0.001 compared with the control group (unpaired two-tailed Student’s t-test)Back to article page