When the tumors reached 100–150 mm3 in volume on day 7 post tumor inoculation, Hf-DBB-Ru, Hf-DBA, or H2DBB-Ru was injected intratumorally at equivalent doses of 0.2 μmol per mouse followed by daily X-ray irradiation at a dose of 1 Gy per fraction (225 kVp, 13 mA, 0.3 mm Cu filter) for a total of 6 fractions on consecutive days. This evidence concerns the gene RPS19 and neoplasm.