CD8A and infection: However, when low numbers of Ezh2fl/flGzmbCre GP33−41-specific memory CD8+ T cells were transferred into naïve hosts, they were unable to expand to the same extent as Ezh2 sufficient memory counterparts and clear the infection as efficiently when challenged with recombinant Listeria monocytogenes engineered to express LCMV glycoprotein33−41 (27).