Get Aplastic Anemia Bone Marrow Aspiration Pics . The specimen is considered hypocellular if it is less than 30% cellular in individuals younger than 60 years or less than. Red blood cells, white blood cells, and platelets. My Story | Bone Marinara from www.bonemarinara.com Now, blood cells are produced in the bones of the body, mainly in the bones of the pelvis, ribs and sternum, through a process called hematopoiesis. Accurate identification of the cause is done by examining the bone marrow (trephine biopsy and aspiration). Aplastic anaemia is a rare disease in which the bone marrow and the hematopoietic stem cells that reside there are damaged.this causes a deficiency of all. Aplastic anemia is a rare disorder characterized by suppression of bone marrow function resulting in progressive pancytopenia. Accurate identification of the cause is done by examining the bone marrow (trephin...