Stem Cell

A stem cell is a cell that remains the same type of cell throughout the life of an individual and retains the ability to supply cells that specialize in one direction and replace dying cells. This term is most often used to refer to hematopoietic stem cells of the bone marrow.

Stem cells have two important properties - self-renewal and differentiation potential. Self-renewal means that when a stem cell divides, it gives rise to two daughter cells, one of which remains a stem cell and the other begins the process of differentiation. The potential for differentiation allows stem cells to develop into specialized cells of the body.

Research into stem cells is being conducted in hopes of using them to treat various diseases. However, the use of embryonic stem cells raises ethical questions. An alternative is induced pluripotent stem cells, derived from adult somatic cells.

A stem cell is one of the most mysterious and promising objects of modern biology. It is the basis for the development and restoration of all tissues and organs of our body. However, what exactly is a “stem cell” and how does it work?

A stem cell is a cell that is capable of self-renewal and division, while maintaining its ability to differentiate into specialized cells. This means that a stem cell can become any cell needed by the body, such as a blood vessel, nerve fiber, bone tissue, etc.

Progenitor cells, also known as stem cells, are the basis for tissue regeneration in the body. They are able to create new cells, replacing old, damaged or dying ones. Thus, progenitor cells play an important role in maintaining the health and functioning of the body.

One of the most well-known types of stem cells is the hematopoietic stem cell. Hematopoietic stem cells are found in the bone marrow and are the basis for the production of new blood cells. They can become red blood cells, white blood cells, or platelets, depending on the body's needs.

However, stem cells not only participate in tissue repair, but also play an important role in the development of the body. During embryonic development, stem cells differentiate into various types of cells necessary for the formation of organs and body systems. For example, stem cells from the heart, liver, and lungs create new cells to replace old or damaged ones.

In general, stem cells play a key role in our lives, ensuring tissue repair and development of the body. They represent a new level of understanding of biology and open new possibilities for treating various diseases and injuries.

Stem cells are cells that can give rise to many types of tissue in the body. If we imagine the development of cancer cells in the form of a mathematical model, then there will be no stem cells; they will die before they even have time to begin dividing. But cancer cells will divide indefinitely until you and I kill them with bullets, poisons or other deadly drugs.

If we talk about hematopoietic stem cells, then this is the largest population of stem cells, more than 75% of it is concentrated in the red bone marrow, where they enter from the blood after leaving the bloodstream in the process of destroying the vessels passing from it. Before being included in the blood transport, cells must do significant work on growth, maturation, and reproduction. But after going through this cycle, they find themselves in a “bottleneck”, when even the slightest obstacles make it difficult for them to participate in this process (no matter where it comes from).

Exposure to radiation, rays, as well as poisoning with toxic substances causes the death of stem hematopoiesis and, in turn, leads to a weakening of the body’s immune system.

Stem cells are of great importance in the treatment of various diseases, where, after the termination of the work of these cells, it is impossible to return the cellular composition to its original state.