Mono-di twins share a placenta, which means they need extra monitoring to make sure they're getting enough nutrients and ...

Find out everything you've always wanted to know about identical twins – from how they form to what makes them unique.

Momo twins account for one percent of all twin pregnancies, making them extremely rare.

Accurate and simple evaluation of vascular anastomoses in monochorionic placenta using colored dye. J Vis Exp 2011; 55: e3208. Wang X, Wei Y, Yuan P, et al. Placental characteristics of twin-to-twin ...

A dichorionic, diamniotic twin pregnancy ensued (Figure 2). Most twin pregnancies arise from two separate fertilized ova (dizygotic twins). Most monozygotic twins arise by the division of an ...