0 -> C_PCC C_PCC -> 0 C_PCC -> 0 0 -> P_PSC P_PSC -> 0 0 -> E_CD8 E_CD8 -> 0 E_CD8 -> 0 0 -> E_CD8 0 -> E_CD8 0 -> E_CD8 E_CD8 -> 0 0 -> N_Killer N_Killer -> 0 N_Killer -> 0 0 -> N_Killer 0 -> N_Killer N_Killer -> 0 0 -> H_T_Helper H_T_Helper -> 0 0 -> H_T_Helper 0 -> H_T_Helper H_T_Helper -> 0 0 -> R_T_Regulatory R_T_Regulatory -> 0 0 -> R_T_Regulatory 0 -> R_T_Regulatory 0 -> R_T_Regulatory R_T_Regulatory -> 0