k1 = rho_C
k2 = g_T
k3 = alpha_1
k4 = g_C
k5 = tao_C
k6 = rho_T
k7 = alpha_2
k8 = rho_C_bar
k9 = g_B
k10 = k
k11 = alpha_B
k12 = tao_B
k13 = On_tumour
k14 = Off_tumour