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<span>The best source of stem cells which also minimizes the risk associated with stem cell transplantation</span> are stem cells preserved from the umbilical cord of the person. <span>Stem cell transplant is the process in which diseased cells are replaced by the stem cells collected at the time of birth from umbilical cord blood or bone marrow.</span>
Answer: The steel frame to make the bike
Explanation:
it is a natural resource that cannot be replaced,
A because it uses a FAN-BOY