Conjoined Twins Separated, Home for Holidays

A complex surgery took a team of 40 doctors seven hours to separate the twins.
2:07 | 12/21/12

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Transcript for Conjoined Twins Separated, Home for Holidays
Now, to the miracle surgery that is sending formerly conjoined twins home for the holidays. It took a team of 40 doctors 7 hours in the operating room to separate them. And abc's sharyn alfonsi met exclusively with the family. And they are looking forward to their bright futures. Reporter: Baby, by their very nature are miracles. And amelia and allison tucker are more proof. Mom, shelly, was 13 weeks in her regularcy when she learned she was having twins. She said, you're having twins. And I think they're connected. My heart dropped further. Their recommendation was to terminate. Reporter: March of this year, shellie gave birth to amelia and allison. The sisters were joined at their abdomen. They held on to my fingers. They came out screaming. We knew we made the right choice. Reporter: The next eight months would be atren's hospital of philadelphia. The girls' 2-year-old brother, owen, often turning the hospital hallways into his own play room. medical hurdles ahead. Doctors decided it was time to separate the girls. They prepared, among other things, practicing on two dolls sewn together. It didn't look as cute as the girls. Reporter: Dr. Holly headrich and a team of surgeons worked for seven agonizing hours. Carefully separating the girls. And then, the moment, one became two. At the end, all of the surgeons came in and told us they were separate, the weight of the world was off of our shoulders. Reporter: Just two months later -- this is allison. She's the smaller, scrappier one. And amelia. She's a little bigger and laidback. But mom, doctors, everyone agr agrees they're little fighters. Allison is already home. And amelia will be joining her soon. Two christmas blessings. For "good morning america," sharyn a, philadelphia

This transcript has been automatically generated and may not be 100% accurate.

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