That's another difference between the primary and the secondary responses. So let's conclude by comparing and contrasting these two different types of responses. So for the primary response we have a relatively long latent period. But for the secondary response we have a relatively short latent period. So that means our secondary response is much quicker to take into effect as a result of those antibodies already being present inside our blood. Now, for the case of the primary, we form a relatively low concentration, peak concentration of antibodies.