Extended Data Fig. 1: Blood film and bone marrow examination findings.
From: In utero origin of myelofibrosis presenting in adult monozygotic twins
a,b, Leucoerythroblastic blood film of twin A (May-Grunwald-Giemsa stain; 100x). c, Bone marrow trephine examination from twin A at diagnosis (hematoxylin and eosin stain). Reticulin stain (d) showed diffuse fiber network with scattered coarse fibers (WHO MF-3) (reticulin stain). e,f, Leucoerythroblastic blood film of twin B (May-Grunwald-Giemsa stain; 100x). g, Bone marrow trephine examination from twin B (hematoxylin and eosin stain). Reticulin stain (h) revealed evidence of patchy, irregular fibrosis and a hypocellular marrow (reticulin stain).
