Chang and Eng Bunker used as early as October 1829 to describe other conjoined twins. Decades later use of the standalone "Siamese twins"—which modern researchers see as outmoded, preferring "conjoined twins"—became widespread. Thus Chang and Eng have often been retrospectively referred to as the "original Siamese twins". Before the Bunkers' bodies were returned to North Carolina for burial (in 1917 they were moved to the cemetery at White Plains Baptist Church outside Mount Airy), doctors took photographs of the connecting tissue and hired sculptor John Casani to make a plaster cast of the twins. The Bunkers' fused livers are preserved in fluid and displayed
Monoamniotic twins Monoamniotic twins Monoamniotic twins are identical twins that share the same amniotic sac within their mother’s uterus. Monoamniotic twins are always identical, always monochorionic and are usually termed Monoamniotic-Monochorionic ("MoMo" or "Mono Mono") twins. They also share the placenta, but have two separate umbilical cords. Monoamniotic twins develop when an embryo does not split until after formation of the amniotic sac, at about 9-13 days after fertilization. Monoamniotic triplets or other monoamniotic multiples are possible, but extremely rare. Other obscure possibilities include multiples sets where monoamniotic twins are part of a larger gestation such as triplets, quadruplets, or more. Monoamniotic