In stark contrast to our previous observations with ID8 tumors [10], B16-F0 (simplified to B16) challenge did not increase the frequency of total γδ T cells or γδ17 T cells in the peritoneal cavity when compared to tumor-free controls (Fig 1A), while CD8+ and CD4+ T cells accumulated significantly (Fig 1B). This evidence concerns the gene CD8A and neoplasm.