Regrowing brain cells

If I read this correctly, it suggests taking one's own brain cells, culturing them, and then putting them back will lead to them multiplying.

"...One week after implantation, the change in signal was consistent with cell accumulation and proliferation around the lesion (Figure 2D). The signal at the periphery of the lesion intensified during the second and third weeks (Figure 2E and 2F), suggesting that the neural stem cells had migrated from the primary sites of injection to the border of the damaged tissue. We did not observe a hypointense signal after 7 weeks, which we attribute to a dilution of signal due to cell proliferation. .."

The main problem after stroke or brain damage is the inability for brain and nerve cells to regrow.
If they can take a few out, zap them and put them back, and they regrow, maybe brains can repair themselves.

Of course, no CLINICAL improvement nosted, and of course, previous experiments using fetal cells ended up with the cells overgrowing.