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Total number of nuclei in blastocyst‐stage embryos cultured in different concentrations of glycine. Values were determined from three replicates (n = 20, 22, 23, 27, 21, and 15 for 0, 0.10, 1, 5, 10, and 20 mM glycine, respectively). Data show mean ± standard error. Different letters indicate statistical differences (P < 0.04).
