Chapter Biological Screening Methods in the Search for Pharmacologically Active Natural Products -- chapter Applications of Liquid Chromatography/UV/MS and Liquid Chromatography/ NMR for the On-line Identi?cation of Plant Metabolites -- chapter Applications of Modern NMR Techniques in the Structural Elucidation of Bioactive Natural Products -- chapter Bioactive Secondary Metabolites from Selected Mexican Medicinal Plants: Recent Progress* -- chapter Flavonoids as Cancer Chemopreventive Agents -- chapter Antitumor Drugs from the Secondary Metabolites of Higher Plants -- chapter Bioactive Taxoid Production from Natural Sources -- chapter Anti-HIV Aromatic Compounds from Higher Plants -- chapter Antioxidative Plant Constituents -- chapter Antimalarial Natural Products -- chapter Search for Natural Products which Affect Cyclooxygenase-2 -- chapter Phytotoxins from Fungi, Pathogenic for Agrarian, Forestal and Weedy Plants* -- chapter Limonoids from Meliaceae and their Biological Activities -- chapter Glycolipids with Immunomodulating Activity from Marine Sponges -- chapter Metabolites of Marine Opisthobranchs: Chemistry and Biological Activity -- chapter Bioactive Diterpenoids from Japanese Soft Corals