In the case of CD310+ expression, in tumor samples, cell counts from alive leukocytes, showed that myeloid CD11b+ cells constitute the most abundant immune population expressing CD310+ within the tumor microenvironment, markedly exceeding the numbers of CD4+ CD310+ and CD8+ CD310+ T lymphocytes which were practically undetected (Figure 3C, left). The gene discussed is CD8A; the disease is neoplasm.