Figure 2 Case 2. (A) Peripheral blood smear showing an immature cell with basophilic vacuolated cytoplasm and a nucleated erythroid cell. (B) Bone marrow biopsy section showing sheets of large cells with vesicular nuclei and prominent nucleoli (haematoxylin and eosin stained). (C) The marrow shows greatly increased reticulin deposition (Gordon and Sweet's silver stain). (D) The immature cells are uniformly immunoreactive for glycophorin C.