Figure 2.

(A) Bone marrow histology at large granular lymphocyte diagnosis: Increased CD3⁺ CD57⁺ lymphoid infiltrate, both interstitial and intra-sinusoidal, in the context of normally proliferating bone marrow, with cells at all differentiating stages. Magnification, ×200. (B) Bone marrow histology at acute promyelocytic leukemia diagnosis: CD3⁺ CD57⁺ lymphoid infiltrate, both interstitial and intra-sinusoidal, in the context of CD13⁺ CD33⁺ CD38⁺ CD64⁺ CD117⁺ CD14⁻ CD34⁻ human leukocyte antigen-antigen D related⁻ CD11a-b⁻ promyelo-blast marrow invasion. Magnification, ×100 (insert, ×200). CD, cluster of differentiation.