Lack of noggin expression by cancer cells is a determinant of the osteoblast response in bone metastases: Ruth Schwaningera, Cyrill A. Rentscha, Antoinette Wetterwalda, Geertje van derHorstc, Rutger L. van Bezooijenb,d, Gabri van der Pluijmb,c, Clemens W.G.M. Löwikb, Karin Ackermanne, Walter Pyerine, Freddie C. Hamdyf, George N. Thalmanna, Marco G. Cecchinia, aUrology Research Laboratory, Department of Urology and Department of Clinical Research, University of Bern, Bern, Switzerland;bDepartment of Endocrinology, cDepartment of Urology, dDepartment of Molecular Cell Biology, Leiden University Medical Centre, Leiden, The Netherlands;eBiochemical Cell Physiology, German Cancer Research Center, Heidelberg, Germany;fAcademic Urology Unit, Unive