as an empty-nester and one who works at home now, i have more time to create and move toward goals i placed aside for a season. there are even color choices for hearing aids now, making them more stylish. when a stem cell is activated and divides, each “daughter” cell has the potential to either remain a stem cell or to differentiate and become another type of cell with a more specialized function, such as a muscle cell, a red blood cell, or a brain cell. 