Double Embryo Transfer. Transferring two embryos at the same time to a woman undergoing IVF.
Twins that each have their own placenta and gestational sac. They are usually non-identical, although it is sometimes possible that they are identical if the embryo splits very early.
Dizygotic twins form when two separate eggs are fertilised by separate sperm (two zygotes). These twins are no more alike than any other brothers or sisters.