Now, what the plasma cells do is they begin to produce plasma soluble and mobile versions of these B cell receptors that can bind onto antigens. And what these are is our antibodies that we spoke of earlier. So antibodies are soluble and mobile versions of these B cell receptors that are found on the membrane of the B lymphocyte. And so what these plasma cells do is they contain highly extensive endoplasmic reticulum that can basically produce many, many of these antibodies. And then these antibodies can move within our blood system, our lymph system and our tissue and bind onto that antigen and elicit some type of response labeled that antigen for destruction by our immune system. Now, finally, these chemicals can also induce the differentiation of B lymphocytes into memory B cells.