To study the dynamics of dendritic cells, we will assume s2 to be a constant source of dendritic cells, d2 to be the rate at which NK cells kill dendritic cells, d3 to be a proliferation rate of dendritic cells due to tumor cells, f1 to be the rate corresponding to the interaction of dendritic cells with CD8+ T cells, and g to be the natural death rate of dendritic cells. This evidence concerns the gene CD8A and neoplasm.