0 -> T_Tumour_Cells T_Tumour_Cells -> 0 T_Tumour_Cells -> 0 T_Tumour_Cells -> 0 N_Natural_Killer_Cells -> 0 0 -> N_Natural_Killer_Cells N_Natural_Killer_Cells -> 0 L_CD8_T_Cells -> 0 L_CD8_T_Cells -> 0 0 -> L_CD8_T_Cells 0 -> L_CD8_T_Cells L_CD8_T_Cells -> 0 0 -> L_CD8_T_Cells L_CD8_T_Cells -> 0 0 -> C_Lymphocytes C_Lymphocytes -> 0 M_Chemotherapy_Drug -> 0 I_IL_2 -> 0 0 -> I_IL_2 0 -> I_IL_2 0 -> M_Chemotherapy_Drug 0 -> N_Natural_Killer_Cells 0 -> L_CD8_T_Cells 0 -> I_IL_2 0 -> L_CD8_T_Cells