Interestingly and in contrast to tumor-free mice (Fig 6E, right graph), tumor-bearing CSC-mice 9 days after termination of CSC/SHC still showed an increased Treg cell proportion in the CD4+ T cell population (Fig 6G, right graph) similar to what has been observed directly after termination of CSC (Fig 1B). This evidence concerns the gene CD4 and neoplasm.