And so we're going to have to wait a certain amount of time for our adaptive immune system to mobilize itself and to actually create the appropriate lymphocytes that are needed to create those antibodies. So our adaptive immune system will need to create the appropriate plasma cells that can produce the antibodies that are specific to that infecting antigen. Now, once we have all those plasma cells, once we have all those active lymphocytes, then our antibodies will begin to be produced and those antibodies will be released into our blood. And so the concentration of the antibodies in our blood will begin to increase sharply. So if we plot the concentration of antibodies that are produced versus time, we basically get the following diagram. So the Y axis is the concentration of our antibodies, our immunoglobulins, and the X axis is the time given to us in weeks.