Comparing EGF-treated MDA-MB-468 (Fig. 2a) and MDA-MB-231 (Fig. 2b) cells transfected with Vim Si1 in vitro before injection, we observed a clear diminution of human tumor cell content in lungs after vimentin silencing, as quantified by RT-qPCR. The gene discussed is EGF; the disease is neoplasm.