A, IGFBP1 and PRL protein secretion in conditioned medium from hESFs treated with 0.5 mm cAMP for 96 h, normalized to total RNA, n = 4. *, Significance accepted at P ≤ 0.05. Error bars, ±sem. B, Hierarchical clustering analysis of hESFnonendo (no endometriosis) and hESFendo (endometriosis) samples treated with (+) or without (−) 0.5 mm cAMP for 96 h. C, Venn diagram of shared and unique genes between hESFendo and hESFnonendo response to cAMP treatment (gene lists in supplemental Tables S1 and S2).