La donació de medul·la òssia requereix una agulla de punció per extreure la medul·la òssia?

Although "bone marrow transplantation" is deeply rooted in the hearts of the people, the professional name should be "hematopoietic stem cell transplantation". In other words, donating bone marrow is really donating hematopoietic stem cells. Hematopoietic stem cells are precursor cells that have the ability to self-renew and can differentiate into various blood cells, and finally produce blood cell components such as red blood cells, white blood cells, and platelets. Bone marrow exists in the mesh between the medullary cavity of long bones (such as humerus, femur) and the loose bones of flat bones (such as ilium). It is a spongy tissue. The marrow that produces blood cells is slightly red, called red marrow. The amount of human bone marrow is related to factors such as body weight. The amount of bone marrow in an adult is generally about 3 kg. Because most of the hematopoietic stem cells in the human body are red bone marrow distributed in larger bone cavities (at birth, the bone cavity is filled with red bone marrow, and with age, the fat in the bones increases, which is yellow bone marrow; red bone marrow; red bone marrow; The hematopoietic function is active, and the yellow bone marrow only retains the potential of hematopoietic function), so in the early days, the method of extracting the bone marrow was used to obtain hematopoietic stem cells, but this was an earlier method limited by technology, and now it is less used. Currently clinical hematopoietic stem cell transplantation includes bone marrow transplantation, peripheral blood hematopoietic stem cell transplantation and umbilical cord blood transplantation.

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