Stem cells are the "master" cells in the body, acting as the building blocks of organs, tissues, blood, and the immune system. Not all stem cells are the same: they fall into three broad categories: embryonic, adult (including bone marrow and peripheral blood), and newborn (included umbilical cord blood, the umbilical cord itself, and the placenta). Read more to learn how stem cells from umbilical cord blood offer tremendous therapeutic potential with significant advantages in the field of regenerative medicine.