"This non-defining role represents non-essential characteristics which are true in some, but not all, cases, yet have an association frequent enough to be of interest."^^ . . "A role used to relate a disease to the type of normal tissue in which the disease process began. The domain and the range for this role are 'Disease, Disorder or Finding' and 'Anatomic Structure, System, or Substance', respectively.NCI" . "Conceptual Entity"^^ . . . . "C43760"^^ . "Has Normal Tissue Origin"^^ . "C1707777"^^ . "Disease_Has_Normal_Tissue_Origin"^^ . "Disease_Has_Normal_Tissue_Origin"^^ . "Disease_Has_Normal_Tissue_OriginPTNCI" . "Disease_Has_Normal_Tissue_Origin_Role"^^ .