x1 = L
x2 = L_RF
x3 = L_RF_C8
x4 = L_RF_FL
x5 = L_RF_FS
x6 = p43_p41
x7 = C3
x8 = C8
x9 = C8_star
x10 = C3_star
x11 = p43_FLIP
x12 = NF_kB_IkB
x13 = NF_kB_IkB_P
x14 = p43_FLIP_IKK_star
x15 = NF_kB_star
x16 = RF
x17 = FL
x18 = FS
x19 = IKK
x20 = L_RF_C8_FS
x21 = L_RF_FL_FL
x22 = L_RF_FL_FS
x23 = L_RF_FS_FS