Conjoined twins is fusion, in which a fertilized egg completely separates, but stem cells (which search for similar cells) find similar stem cells on the other twin and fuse the twins together. Conjoined twins share a single common chorion, placenta, and amniotic sac, although these characteristics are not exclusive to conjoined twins, as there are some monozygotic but non-conjoined twins who also share these structures "in utero". The most famous pair of conjoined twins was Chang and Eng Bunker (Thai: อิน-จัน, In-Chan) (1811–1874), Thai brothers born in Siam, now Thailand. They traveled with P.T. Barnum's circus for many years and were labeled
Katona Twins Katona Twins The Katona Twins are a celebrated Hungarian guitar duo, comprising Péter and Zoltán Katona, identical twins. They have performed at prestigious venues and at major music festivals around the world. Their performances and recordings have been widely reviewed by the music press and they have been described as "the classical world's best-known guitar duo". The Katonas' repertoire includes Classical music, Tango and Spanish guitar. They have also adapted and arranged classical works for guitar duo. Their five album releases to date have included works by Handel, Scarlatti, Isaac Albéniz and Ástor Piazzolla. They also perform works by de