Summary
A glucose concentration of 3.5 mg/ml is optimal for in vitro embryo attachment and trophoblastic cell outgrowth. Raising the concentration above 3.5 mg/ml does not improve embryo culture and can at certain concentrations be detrimental to embryo development.
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Wordinger, R.J., Kell, J.A. Elevated glucose levels influence in vitro hatching, attachment, trophoblast outgrowth and differentiation of the mouse blastocyst. Experientia 34, 881–882 (1978). https://doi.org/10.1007/BF01939680
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DOI: https://doi.org/10.1007/BF01939680