HOXD9 and neoplasm: The cells stably expressing LV-vector, LV-HOXD9 src-shRNA or LV-HOXD9-RUFY3-shRNA in three groups were injected subcutaneously into the right flank of each nude mouse, as shown in Fig. 6a and Additional file 6: Figure S5A & B. The tumor volumes of the HOXD9-overexpressing cells were markedly greater than those of the vector-expressing cells.