Stem Cells help Rats Walk

In Washington, scientists have discovered stem cells harvested from the brains of mice can restore some walking ability in laboratory rats with spinal-cord damage. The findings show that movement using stem cells, that can turn into different cells and tissues. Hopefully some day stem cells will be able to help paralyzed individuals to eventually walk again. The stem cells were ejected into the rat, where they eventually migrated to the spinal-cord and merged into the injured tissues, and developed into myelin a nervous tissue that conducts and transports neural signals to the brain. The impulses than allowed the rat to maintain some body movements resembling walking that was an impossible task before. Just think that one day humans that are paralyzed and thought they could never walk again could indeed walk. This is far into the future, but strides like this make the dreams a reality. Fetus embryos used for stem cell reseach is a contraversial subject and have yet to be fully used for stem cell research. What do you think is it worth being able to walk again?