Human trophectoderm biopsy and secretion of chorionic gonadotrohin

Abstract excerpt

We have previously developed a technique of trophectoderm biopsy to obtain cells from human blastocysts for preimplantation genetic diagnosis. To determine whether this technique affects the subsequent development of the blastocyst, 45 manipulated blastocysts were observed from days 3 to 14 in culture, the amount of human chorionic gonadotrophin (HCG) secreted by each embryo was measured and these results were...

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