11.   Work in liver endothelial cells suggests that matrix prepared from human amnion is more effective at maintaining physiological phenotype than EHS.

12.   A brain cell does not turn into a liver cell.

13.   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.

14.   But most of the genes in an adult cell, like a skin cell or a brain cell or a liver cell, are silenced.

15.   But, he added, sometimes the breakdown products are toxic to liver cells.

16.   By testing the compound against liver cells, they can surmise whether the liver would break down and destroy the drug.

17.   Cells from the bone marrow can also turn into liver cells but do so rather inefficiently.

18.   Different sets of genes are turned on in each type of cell, and that is what distinguishes a liver cell from a lung or skin cell.

19.   For example, blood-forming cells have changed into muscle cells, and neural stem cells have given rise to liver cells in recent experiments.

20.   Given alone, safrole quickly oxidizes liver cells, causing extensive DNA damage.