title: Fibrous long spacing-like fibers in the bone marrow of primary myelofibrosis.
mesh_terms: D000328:Adult; D001853:Bone Marrow / Q000648:ultrastructure*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D055728:Primary Myelofibrosis / Q000473:pathology*