(Credit: ValentinaKru/Shutterstock)

It’s been more than a decade since the first lab-grown organ (a more-or-less functional replacement bladder) was successfully implanted into a human body. But in the time since tens of thousands of people have been added to the organ donor waiting list in America alone.

Scientists are still figuring out how to grow organs at a scale — and price — that can meet the needs of thousands of patients a year. One of the big challenges to creating new organs i