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Chorionic gonadotropin (CG) secretion within day 10 culture medium, normalized by embryo diameter (mm). Blastocysts were cultured alone as a control (blast, n=7) or in the presences of NK cells (n=4), Macrophages (Mφ, n=9) or NK cells + Mφ (n=4). Data is represented as the mean ± SE, where the asterisk denotes P < 0.05 compared to control medium.
