"A specializing role which may be used to override Disease_Has_Normal_Cell_Origin. The domain and the range for this role are 'Disease, Disorder or Finding' and 'Anatomic Structure, System, or Substance', respectively.NCI" . . "Disease_Excludes_Normal_Cell_OriginPTNCI" . . . "Conceptual Entity"^^ . "Disease_Excludes_Normal_Cell_Origin"^^ . "Disease_Excludes_Normal_Cell_Origin"^^ . "Excludes Normal Cell Origin"^^ . "R138"^^ .