1.3.4. Stem Cells

Summary: The text discusses stem cells, explaining their origin in bone marrow, their journey through the bloodstream, and their transformation into specialized cells within various organs. It highlights the high concentration of stem cells in rapidly regenerating tissues like skin and the small intestine, emphasizing that all organs constantly regenerate. The text also notes that the speed of regeneration varies across different parts of the body.

So again, what are those stem cells? Very briefly, a stem cell is a very small cell that is born within bone marrow and it travels from the bone marrow through blood to all organs of our body. As these young cells arrive at some target organ, they will start to mature and they will transform into a type of cell of this specific organ. So what you will see here on this picture, these are stem cells marked by green biomarker. So what you see here, let's say, look at the skin, for example, at the D. So here, you will see a very high concentration of this green highlight stem cells. This is because the rate of skin regeneration is very high. much higher, let's say, than other organs. The same goes to the small intestine. So you will see that the inner lining of the intestine also regenerating very fast. And now actually, it is recognized that all parts of our body, all organs are constantly regenerating. We can find the stem cells in all parts of our body, including the brain, the heart and kidney, lungs and so on. So the process of using this in-built method never stops and it's completely normal. The only difference you may think about is just speed of regeneration is quite different.