IL-15 mediated expansion of rare durable memory T cells following adoptive cellular therapy di Robin L Jones, Erik A Farrar, Jianhong Cao, Venu G Pillarisetty, Stanley R Riddell, Jean Campbell, Brett A Schroeder, Ralph Graeme Black, Shihong Zhang, Karan Kohli, Robert H Pierce, Lu Yao, Theodore Scott Nowicki, Heather Sloan, Dawn Stief, Lee D Cranmer, Douglas S Hawkins, Edward Y Kim