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Effects of bisphenol S on the percentage of bovine cumulus-enclosed oocytes to reach metaphase II at 24 h. The data are from at least three independent experiments per concentration. The total number of oocytes used for each concentration were: 110 (no bisphenol S (BPS)), 31 (1 fM), 18 (10 fM), 41 (100 fM), 23 (1 pM), 51 (10 pM), 31 (100 pM), 25 (1 nM), 29 (10 nM), 36 (100 nM), 30 (50 μM).
