Researchers from Nanjing Medical University have developed a novel method to generate transient totipotent blastomere-like stem cells (tTBLCs) by treating mouse embryonic stem cells (mESCs) with a ...

One cell (blastomere) is removed from a cleaving embryo and tested for the genetic or chromosomal condition of concern. Some programmes analyse polar bodies extruded from oocytes during meiosis, ...