The marrow between the pink bone trabeculae seen here is nearly 100% cellular, and it consists of leukemic cells of acute lymphocytic leukemia (ALL) that have virtually replaced or suppressed normal hematopoiesis.

• 如图可见粉红色的骨小梁之间的骨髓几乎100%25是细胞，是由急性淋巴母细胞性白血病(ALL)的白血病细胞构成，这些细胞实际上替代或抑制了正常的造血作用。