Because it can lead to something like this:
LONDON, England (CNN) — Doctors have given a woman a new windpipe with tissue engineered from her own stem cells in what experts have hailed as a “milestone in medicine.”
The breakthrough allowed Claudia Castillo, 30, to receive a new section of trachea — an airway essential for breathing — without the risk that her body would reject the transplant.
Castillo was given the stem cell surgery, the controversial branch of medicine that some say could lead to human cloning, after suffering a severe lung collapse.
This is, I would think, just the beginning.
