Hematogones were initially described as mysterious cells in bone marrow smears more than 70 years ago. These cells are normal bone marrow B-lymphocyte precursors with properties that overlap those of lymphoblasts. Their morphological and immunological features are described here with an update on the knowledge of hematogones in hematological and non-hematological disorders.
Keywords: B-cell precursors; Bone marrow transplantation; Hematogones; Hematological recovery.
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