blastocyst biopsy

blastocyst biopsy

A biopsy performed after the blastocyst differentiates into 2 morphologically distinct cell lines: the trophoblast and the inner cell mass of about 60 cells. Blastocyst-stage biopsy for pre-implantation genetic diagnosis is performed on day three of in vitro culture, which allows the developing TE to protrude after blastulation.