. "\"Any process that activates or increases the rate or extent of T cell proliferation.\" [GOC:ai]" . . "positive regulation of T cell proliferation" . "positive regulation of T lymphocyte proliferation" . "positive regulation of T-lymphocyte proliferation" . "up regulation of T cell proliferation" . "up-regulation of T cell proliferation" . "upregulation of T cell proliferation" . . . . "activation of T cell proliferation" . "stimulation of T cell proliferation" .