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The terms hip dysplasia, fibrous dysplasia, renal dysplasia refer to an abnormal development, at macroscopic or microscopical level. Myelodysplastic syndromes, or dysplasia of blood-forming cells, show increased numbers of immature cells in the bone marrow, and a decrease in mature, functional cells in the blood.yelodysplastic syndromes, or dysplasia of blood-forming cells, show increased numbers of immature cells in the bone marrow, and a decrease in mature, functional cells in the blood.
Red blood cells, white blood cells and plasma are all formed inside of bones in the red bone marrow. Stem cells within the bone marrow constantly produce blood cells and work harder when the body is ill or bleeding to make up for blood cells lost.lowly, as the body ages, this marrow is replaced by inactive marrow that is known as yellow bone marrow. Red bone marrow is responsible for producing and destroying blood cells. About a third of the marrow's production consists of red blood cells and the rest is white blood cells and platelets.