It doesn't even have to be an exogenous disease. There are trials being scheduled for their use in autoimmune disease, IIRC, by sensitizing tnf-regulator cells

It doesn't even have to be an exogenous disease. There are trials being scheduled for their use in autoimmune disease, IIRC, by sensitizing tnf-regulator cells to autoantigens (or perhaps consequent interleukins, I forget). The have already been used to cure the mouse model of MS.