11.   As best they can tell, the transplanted cells have been transformed from cancerous gonadal cells to stable nerve cells through a series of manipulations.

12.   However, offspring produced from the transplanted cells carry the genetic pattern of the donor mouse.

13.   Just like the native brain cells they joined, the transplanted cells gained the ability to signal neighbors with bursts of the chemical dopamine.

14.   The researchers found that the transplanted cells caused myelin to grow around the nerve fibers in the rats.

15.   The transplanted cells came from a tumor and were chemically altered for more than a decade.

16.   This consists of proteins that attack microbes or transplanted cells.

17.   Using transplanted cells in lieu of a heart transplant is likely years away.