. "Chemotherapy_Regimen_Has_ComponentPTNCI" . "R123"^^ . "Chemotherapy_Regimen_Has_Component"^^ . . "A role used to specify the component agents which are used in a particular chemotherapy regimen or agent combination. The domain and the range for this role are 'Chemotherapy Regimen or Agent Combination' and 'Drug, Food, Chemical or Biomedical Material', respectively.NCI" . . "Has Component"^^ . "Chemotherapy_Regimen_Has_Component"^^ . "Conceptual Entity"^^ .