The mitochondrion produce a substance called adenosine triphosphate. It is also known as ATP. It is believed to be our source of energy. ATP's main purpose is to transport chemical energy within cells for metabolism[2]. Metabolism is the sum of the physical and chemical changes that take place in living organisms.
Stem cell harvest. Stem cells used to be harvested from the bone marrow. That has now largely been abandoned in favour of harveting directly from the peripheral blood.
Stem Cell Mobilization. In the past, a bone marrow harvest (a surgical procedure) was the only way to collect stem cells for a transplant. Today it is now possible to collect stem cells from the peripheral blood (from the bloodstream).