Last spring, John Zhang made headlines after his fertility clinic announced that for the first time a baby had been born using a new technique requiring three genetic parents. The baby’s mother carried the genes for a fatal nervous system disorder called Leigh syndrome, but Zhang had been able to…
Over the course of seven years, Sezenia Tzeni endured seven rounds of in vitro fertilisation. Typically, women undergo only three or four IVF treatments before either getting pregnant or giving up. But for Tzeni and her husband, conceiving a child was more important than almost anything else.
In vitro fertilisation for humans has been around since the late 1970s, but the same can’t be said for our canine companions. But now, after decades of research, scientists have finally produced the first live, healthy puppies from frozen embryos.