摘要
Biomedical engineers have discovered a pharmaceutical target that,when activated,can reverse bone degradation caused by osteoporosis in mouse models of the disease.Despite its apparent rigidity,bone is living tissue constantly being broken down and replaced by the body.Osteoporosis occurs when old tissue is lost faster than new tissue can be created,causing the bone to become weak and brittle.The disease afflicts more than 40 million men and women in the United States alone and is most common in older women past menopause.
