They applied epigenetic drugs and found that the numbers of T cells in the tumor increased. (uofmhealth.org)
We already know that if you have a lot of T cells in a tumor, you have better outcomes. (sciencedaily.com)
Specifically, we find that the systemic inflammatory response induced after surgery promotes the emergence of tumors whose growth was otherwise restricted by a tumor - specific T cell response. (stm.sciencemag.org)