Steroids regulate differentiation, growth and functioning of many tissues via a nuclear receptor gene activation mechanism. Molecular biology has opened the way for more detailed investigation of the complex set of intracellular interactions contributing to organ-selective actions of steroids and steroid-like compounds such as vitamin D. In this volume leading experts address basic molecular mechanisms of tissue specificity and related issue, with the goal of attaining a better understanding of the underlying mechanisms of organ selective actions of steroids. Discussed is the extent to which...