Onion (<i>Allium cepa</i> L.)Flavonoid Extract Ameliorates Osteoporosis in Rats Facilitating Osteoblast Proliferation and Differentiation in MG-63 Cells and Inhibiting RANKL-Induced Osteoclastogenesis in RAW 264.7 Cells. The gene discussed is TNFSF11; the disease is osteoporosis.