title: Collagen and laminin immunoreactivity in Ewing's sarcoma: support for an uncommitted mesenchymal cell derivation.
mesh_terms: D001859:Bone Neoplasms / Q000032:analysis; D003094:Collagen / Q000032:analysis*; D006651:Histocytochemistry; D006801:Humans; D007158:Immunologic Techniques; D007797:Laminin / Q000032:analysis*; D012512:Sarcoma, Ewing / Q000032:analysis*
chemical_list: D007797:Laminin; D003094:Collagen