1.   But Geron has the exclusive rights to commercialize treatments using six different cell types derived from the stem cells, like neural cells and liver cells.

2.   But mouse studies suggest their potential may be greater, perhaps even including neural cells.

3.   Diacrin Inc. of Charlestown, Mass., is testing neural cells from pig fetuses.

4.   Neural cells at different points in those regions are sensitive to different tones.

5.   One was the isolation of so-called stem cells, the primordial cells from which all others evolve, that can potentially be made into neural cells for transplantation.

6.   Scientists at the University of Milan in Italy have found that a chemical found in grapes and wine stimulates and regenerates neural cells.

7.   Scientists found, almost serendipitously, that when treated with chemicals called retinoids, some of the cells turned into neural cells.

8.   Similar hints of success have been found in clinical trials run by Diacrin Inc. of Charlestown, Mass., the company furthest along in neural cell implants.

9.   The enzyme, known as Mapkinase, stimulates and regenerates neural cells.

10.   The researchers tested resveratrol on human neural cells in laboratory cultures and found that it made them grow small extensions through which they could connect with neighboring cells.