Stem cell - Definition

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A stem cell is a specialized type of cell capable of multiplying while keeping the same genetic heritage. Embryonic stem cells are the basis for the formation of an organism and are able to adapt to any cell type in the body. After development, the hematopoietic stem cells are the best known: they play a crucial role in the formation of blood cells and are found primarily in the bone marrow for the formation of red blood cells, white blood cells, and platelets, and in the lymphoid organs (spleen, lymph nodes and bone marrow) for the synthesis of lymphocytes. Stem cells are the subject of intense research in the hope of curing currently incurable diseases.