Cell Cultures and Secondary Products.- Recent Advances in the Production of Medicinal Substances by Plant Cell Cultures.- Production of Natural Substances by Plant Cell Cultures Described in Japanese Patents.- Formation of the Indole Alkaloids Serpentine and Ajmalicine in Cell Suspension Cultures of Catharanthus roseus.- Cardiac Glycosides in Cell Cultures of Digitali.- Biochemistry, Physiology and Regulatory Aspects.- The Common and Unusual Lipids of Plant Cell Cultures.- Biosynthesis of Mevalonoid-Derived Compounds in Cell Cultures.- Current Problems in the Regulation of Nitrogen Metabolism in Plant Cell Cultures.- Improvement of Growth Rates of Plant Cell Cultures.- Regulatory Aspects of Phenylpropanoid Biosynthesis in Cell Cultures.- Selection and Characterization of Biochemical Mutants.- Biotransformation.- Biotransformation of Cardiac Glycosides by Plant Cell Cultures.- Metabolism of Steroids in Plant Tissue Cultures.- Catabolism.- Catabolism of Endogenous and Exogenous Compounds by Plant Cell Cultures.- Enzymological Aspects of Flavonoid Catabolism in Plant Cell Cultures.- Metabolism of Xenobiotics by Plant Cell Cultures.- Uptake and Metabolism of Aldrin in Plant Tissue Cultures.- Catabolism of ?-Hexachlorocyclohexane (Lindane) by Plants and Cell Cultures - a Comparison.- General and Analytical Techniques.- Plating of Plant Cells.- The Freeze-Preservation of Plant Cell Cultures.- Cultivation of Plant Tissue Cultures in Bioreactors and Formation of Secondary Metabolites.- Growth of Cell Cultures Under Chemostat Conditions.- Radioimmuno-Screening Methods for Secondary Plant Products.- RIA-Test of Digitalis Plants and Tissue Cultures.- Somatic Hybridization, Fusion and Haploids.- Somatic Cell Hybridization by Protoplast Fusion and Morphogenesis.- Protoplasts inStudies of Cell Genetics and Morphogenesis.- Technical Advances in Protoplast Isolation and Cultivation.- On Some Selected Problems and Results Concerning Culture and Genetic Modification of Higher Plant Protoplasts.- Theoretical Aspects of Haploid Techniques.- Potential from Haploid and Possible Use in Agriculture.- Regeneration and Organogenesis.- Basic Aspects of Differentiation and Plant Regeneration from Cell and Tissue Cultures.- Regulation of Morphogenesis.- Regeneration of Virus-free Potato from Tissue Culture.- Clonal Crops Through Tissue Culture.- Application of Tissue Culture for Plant Improvement.