damaged urinary tracts

"Tissue-engineered urethras": Weird phrase, awesome result
  • what Five Mexican boys with damaged urinary tracts now have had their urethras fully repaired by doctors using an experimental procedure we’ll totally tell you about in the next box.
  • how?! Science! Well, and their own cells. The boys, injured in separate accidents, had their cells isolated and grown in a lab into new urethras using a process called tissue engineering. Neat. source