Where are Stem Cells Found?

Stem cells are found in a human embryo, or they can also be found in the bone marrow, or umbilical cord blood, and also in the testies of males. These stem cells reproduce to make new cells constantly but they can be influenced to become cells that they never once were supposed to be. These stem cells can be very valuable to many people who are sick and need a new organ seeing as we don't have enough donors to keep up with the demand of transplants.