So antibodies are very, very important and they're involved in the adaptive immune system. And that's exactly why we call it an adaptive immune system because we have these other types of cells known as memory B cells and we also have actually memory T cells as we'll see in a moment. And what these memory cells do is they store a copy of that antibody on the membrane of that memory cell. And so these memory B cells swim around and circulate our blood system. Now lymph system and if that same type of pathogen ever reinfects our body these memory b cells as well as memory T cells of the cell mediated immunity can actually recognize these pathogens immediately and begin a very quick and effective response that can ultimately kill off that reinfecting pathogen. So these are the two types of cells that come from our B lymphocyte.