Understanding and Manipulating Lignin Biosynthesis in Switchgrass Manipulation of Lignin Biosynthesis in Forage Legumes Biosynthesis and Exploitation of Novel Lignin Structures Molecular Approaches to Improved Protein Utilization by Genetic Manipulation of Condensed Tannins in Alfalfa Biosynthesis and Control of Complex Isoflavonoids in Legume Root and Cell Cultures Grape Seed Polyphenols and Alzheimer's Disease