Injections of human stem cells seem to directly repair some of the damage caused by spinal cord injury, according to research that helped partially paralyzed mice walk again.
Injections of human stem cells can also be more common than you think.
( z1 possible :ARG1 ( z2 have-degree :ARG1 ( z3 inject :ARG1 ( z4 cell :mod ( z5 stem :mod ( z6 human ) ) ) ) ) :ARG2 ( z7 common ) :ARG3 ( z8 more ) :ARG4 ( z9 think :ARG0 ( z10 you ) ) :mod ( z11 also ) )