 Dr. Kronenberg has made a series of fundamental observations of importance to the understanding of how several peptides regulate the formation and remodeling of bone.These include the cloning of a cDNA for parathyroid hormone, the identification of a role for parathyroid hormone-related protein in endochondral ossification through Indian hedgehog (IHH) activation, and studies that identified a role for parathyroid hormone in the regulation of the bone marrow stem cell niche.He has served as the President of the American Society for Bone and Mineral Research and the Endocrine Society.