The mean number of CD20+ B cells in the tumor nests and the surrounding stroma was 18.67 ± 1.63 per mm2 (range: 0.00 to 18.67) and 42.47 ± 78.63 per mm2 (range: 0.00 to 426.67), respectively. The gene discussed is MS4A1; the disease is neoplasm.