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Proliferation of endometrial microvessel endothelial cells, expressed as percentage of Ki67+/Ki67 − cells, in baboons 0, 2, and 6 h after administration of estradiol (E2) (n = 5), estradiol plus VEGF Trap (n = 3), or saline/hFc vehicle (n = 5). *, Different (P < 0.05, ANOVA and Newman-Keuls test) from time 0 h.
