Please review/double-click, the hyperlink above.
It contains some interesting stuff, to say the least.
"This is the first demonstration of transplanted human neurons synapsing, or making mature structural connections, with the rat motor neurons, something which has not been demonstrated before," said Dr. Karl Johe, Neuralstem's Chief Scientific Officer and a study co-author. "Our earlier work with this ALS model showed that the stem cells delayed onset of the disease and played a neuroprotective role. Now we have clear evidence that they can become an integral part of the rat nervous system that controls the muscles. I would expect these cells to be readily accepted by and integrated into a human nervous system, such as in an ALS or a spinal cord injury patient."