Velcade, a drug used to treat cancer in the bone marrow and known generically as bortezamib, might hold the keys to a future osteoporosis drug. The medication, which is produced by Millennium Pharmaceuticals to treat multiple myeloma, was found by researchers to stimulate the stem cells in mice that produce osteoblasts, which are responsible for building bone in the body. The study was conducted by a team at Massachusetts General Hospital and the Harvard Stem Cell Institute and published in the...