Fig. 4

a Relative levels of glucose uptake in non-decidualized and decidualized human endometrial stromal cells. The values are presented as box plots showing minimum, first quartile, median, third quartile and maximum. Wilcoxon test was used for statistical analysis. p < 0.05 was considered significant. * = p < 0.05. b Relative levels of glucose uptake in decidualized human endometrial stromal cells in response to different concentrations of insulin. The results are presented as mean values with 95% confidence intervals (CI) for each culture condition. All groups were compared to the control group (decidual cells) and differences considered statistically significant if 95% CI did not include the numerical value of the control group in which case the significance was marked with one asterisk (*) corresponding to the significance level of p < 0.05