Scientists have successfully implanted lab-grown vaginas into four teenage girls suffering from Mayer-Rokitansky-Kuster-Hauser syndrome.

The condition results in females born with no or underdeveloped vaginas, impacting their sex lives and reproduction.

The lab-grown vaginas were "built" using the patients' own cells.

Dr. Anthony Atala, director of the Wake Forest Institute for Regenerative Medicine, said he and his team have been working on the procedure for around 25 years.

Each of the surgeries in 2008 have been successful, showing healthy results in tests of functionality.

Read more: Forbes

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