IVF embryo testing (image 5 of 5). Coloured light micrograph of one cell of an IVF human embryo during pre-implantation genetic testing. This one rounded cell (near centre) is from an 8-celled embryo produced by in vitro fertilisation (IVF) in the laboratory. The pipette has drawn off this cell from the embryo after the embryo membrane was punctured with acid. The cell is then genetically screened to check for disorders such as Down's syndrome. Once screened and found normal, the rest of the embryo will be implanted into the uterus (womb) wall to produce a healthy baby. See photos M802/191-195 for a sequence of this cell capture procedure.
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