CARM1 and osteoporosis: To assess the potential function of CARM1 in bone loss in oophorectomy mice, 10‐week‐old osteoporosis model mice were adopted intramedullary injection28, 35 of Carm1‐overexpressing or control lentivirus (pLV‐Luci vector) starting 1 day after oophorectomy.