Chapter 1 Ruth Sager, Geneticist -- chapter 2 Maspin in the Sager Laboratory -- chapter 3 Maspin: Functional Insights from a Structural Perspective -- chapter 4 Maspin and Myoepithelial Cells -- chapter 5 Maspin and Pericellular Plasminogen Activation in Cell-Matrix Interaction -- chapter 6 Genetic and Epigenetic Regulation of Maspin Gene Expression in Normal and Tumor Tissue -- chapter 7 Maspin Suppresses Breast Cancer Cell Invasiveness by Modulating Integrin Expression and Function -- chapter 8 The Role of Maspin in Tumor Progression and Normal Development -- chapter 9 The Role of Maspin in Human Placental Development -- chapter 10 Maspin, a Potential Prognostic Marker for Human Cancers