Monoamniotic-monochorionic twins, aka "momo" or "mono-mono" twins, share an amniotic sac and placenta. Here's what to know about pregnancy with mono-mono twins. MoMo or mono-mono twins are ...

A rare set of 'mono mono' twin girls have been filmed holding hands mere moments after they were born. Newborns Jenna and Jillian Thistlewaite shared the same single amniotic sac and placenta in their ...

Monoamniotic twins are identical twins that share an amniotic sac and placenta and is a rare type of twin pregnancy. Due to one placenta, these babies have a vascular connection called anastomosis ...