Body & Brain

The brain 'sees' Braille, plus engineered urethras and baseball practice swings in this week's news

Tissue-engineered urethras Using cells from a person’s own body, scientists have rebuilt urethras for five boys age 10 to 14 who had defects in the urinary tube. The researchers used cells from each boy to bioengineer urethras by growing the cells on a tubular scaffold and then surgically installed the living-tissue tube in each patient.