Your Health, Your Future, Independence, The human body contains hundreds of different types of cells that are important for our daily health. These cells are responsible for keeping our bodies running each day such as making our hearts beat, brains thinks, kidneys clean our blood, replace our skin cells as they shed off, and so on. The unique job of stem cells is to make all these other types of cells. Stem cells are the suppliers of new cells. When stem cells divide they can make more of themselves or more of other types of cells. For example, stem cells in skin can make more skin stem cells or they can make differentiated cells of the skin that have specific jobs of their own such as making the melanin pigment.