CD8A and rectal cancer: Six cell types were found significant by comparing the 40 cell type proportions in responsive (R) versus non-responsive (NR) rectal cancer tissues, i.e., CD4+ T cells, adipocyte, and CD4 memory cells resting as favorable prognosis factors, while CD8+ T cells, preadipocyte, and macrophage M2 as unfavorable prognosis factors.