Theory
Stem Cell
Embryonic stem cell
Induced Pluripotent stem cell
Adult stem cell
Mesenchymal stem cell
Also known as stromal stem cells, mesenchymal stem cells are found in the bone marrow, fat (especially belly), peripheral blood (few), and joints (extremely few), and can be differentiated into various tissue cells such as bones, joints, muscles, ligaments and fat through spreading and differentiation.
There is 1 stromal stem cell in every 250,000 cells in the bone marrow of an ordinary 25-year old adult. This proportion decreases with age.
Hematopoietic stem cell
Hematopoietic stem cells are found mainly in the bone marrow. They can create blood cells such as white blood cells, red blood cells and platelets through spreading and differentiation, and exist in a small amount in the blood. In addition to blood cells, it can differentiate into various tissue cells such as bones, muscles, nerve cells, endothelial cells, and cells of liver, lung, stomach and skin.
There is 1 hematopoietic stem cell in every 10,000 – 15,000 cells in the bone marrow, and this proportion does not decrease with age.
Four essential cells for regeneration

Stem cell

Growth factor

White blood cell
