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.
Discovered in the 1960s, blood stem cells (haematopoietic stem cells) were the first stem cells to ever be discovered. Blood stem cells primarily reside in bone marrow and make all the cells found in blood, including cells important for the immune system. Transplants of blood stem cells have become widely used to treat diseases such as leukaemia, anaemia and autoimmune diseases.