In vitro fertilization 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.
These time lapses are captured by a computer that automatically tracks embryo growth from the moment the sperm enters the egg during in vitro fertilization. It selects the best candidates for implantation in mothers, using special algorithms that look for some key markers during the cell division process.
Until about 2004, most scientists believed that women were born with all the reproductive eggs they would have for the rest of their lives. Then a scientist named Jonathan Tilly published research that claimed women might actually replenish their supply of eggs throughout their lives.
A desperate Israeli family won a court decision that lets them extract and freeze the eggs from their dead daughter. The teenage girl died unexpectedly after a recent car crash.