Tumor growth factors (e.g., EGF, PDGF-α, PDGF-β, HGF, and GDF-15), chemotactic factors (e.g., CXCL9 and CCL-25), matrix metalloproteinases (MMP1, MMP3, and MMP9), and inflammatory cytokines (IL-1β, IL-2, and IL-7) were discovered in liver tumors to chemoattract MSCs [19]. The gene discussed is IL2; the disease is neoplasm.