THE IMPORTANCE OF STEM-CELLS Stem cells are special human cells that have the ability to develop into many different cell types, from muscle cells to brain cells. Scientists have found stem cells in tissues, including: The brainDental pulpBone marrowBlood and blood vesselsSkeletal musclesSkinThe liver Stem cells exist in two main forms; embryonic stem cells and adult stems cells. Embryonic stem cells can turn into more than one type of cells whereas adult stem cells are more likely to generate only certain types…