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What is trophectoderm biopsy?

April 26, 2017biopsy trophectoderm

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What is trophectoderm biopsy?

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Trophectoderm biopsy is another method used for embryo biopsy. Trophectoderm cells are extra-embryonic tissue; this means that it does not become part of the fetus but becomes part of supporting structures, such as the placenta and membranes. Trophectoderm biopsy takes place at the 16-32 cell “blastocyst” stage of development, as the trophectoderm is beginning to herniate through the zona pellucida. Instead of removing individual blastomeres, several trophectoderm cells are removed.