Bioengineered Urethras!

The future of bioengineered organs and tissues is very bright. We are always seeing new articles and news about breakthroughs in science and health technology. We have already studied and read about bioengineered lungs and kidneys, and we are currently designing a bioartificial heart.
In this article, which I linked at the bottom, scientists were able to engineer the world's first bioartificial urethra. Scientists used the patient's own cells to grow this structure. It was successful in five Mexican children and was fully functional. Although it took weeks to grow, these tissues have proven that they have longevity by still being operational over 6 years after being implanted.
This is a breakthrough in medical technology, along with all the other bioartificial tissues and organs we've been reading about, since it represents a shift in the medical field in terms of how to treat a patient. By using the patients own cells, it minimizes the risk of rejection by the body and doesn't raise too many ethical dilemmas (compared to xenotransplantation or stem cells or other methods).
The same scientists have designed a bladder using similar mechanisms.
The door is wide open for the future of bioengineering.
The article is here: http://www.bbc.co.uk/news/health-12666171