Description: Photosynthesis.- Photosynthetic Reaction Centers: Common Features and Specific Properties.- The Topology of the Photosystem II Reaction Centre and its Herbicide Binding Site.- Photoinactivation of the Isolated Photosystem Two Reaction Centre and its Prevention.- Migration and Trapping of the Energy in the Photosynthetic Membrane of Rhodobacter sphaeroides R26.1 Probed by Photovoltage Measurements.- The Necessity of Carotenoids for the Assembly of Active Photosystem 2 Reaction Centres.- Energy Transfer in Photosystem II Antenna.- Non-Linear Processes in Photosynthetic Light Absorption.- Differential Polarization Imaging of Chloroplasts: Microscopic and Macroscopic Linear and Circular Dichroism.- Organization of the Rhodobacter capsultus Carotenoid Biosynthesis Gene Cluster.- Photosynthetic Membrane Energization and Energy Storage: Studies with Electrochromic, Fluorescence and Photoacoustic Spectroscopy.- Redox Properties of the Cytochrome bf Complex from a Thermophilic Cyanobacterium.- Photosynthetic Electron Transport in the Anoxygenically Grown Cyanobacterium Oscillatoria limnetica.- Biosynthesis of Chlorophyll in a Chemoheterotrophic Cyanobacterium, Svnechocystis PCC 6714.- New Aspects of Biosynthesis of Chlorophylls from Protochlorophyllides in Scenedesmus.- Plant Luminescence.- Ultraweak Luminescence from Plant Tissue: Spectral Characteristics and Effects of Ultraviolet Radiation, Anaerobiosis and Ageing.- Psoralen Photosensitization.- Photosensitized Action on the Cell Membrane and its Constituents by Furocoumarins.- Structure of Furocoumarin-DNA Photoadducts.- Monofunctional Furocoumarins: Photochemical, Photobiological and Phototherapeutic Properties of Pyridopsoralens.- Damage of Chromosomes of Healthy Persons and Psoriasis Patients Under PUVA Conditions.- 5-MOP Induced Protection Against Epidermal DNA Damage by Ultraviolet Radiation in Human Skin: The Role of the Skin Type.- Quantitative Characterization of Photosensitizer-Nucleoprotein Interactions: A Comparison of 4,6,4?-Trimethylangelicin and 4?-Aminomethyl-4,5?8 Trimethylpsoralen.- Comparative Studies on the Photosensitizing Potency of 5-MOP and 8-MOP.- Analyzing 8-MOP Pharmacokinetics.- Mutagenesis Photoinduced by Psoralens in Yeast.- Photodynamic Therapy.- Second Generation Photosensitizers for the Photodynamic Therapy of Tumours.- Photophysical Studies of Systems Related to Photodynamic Therapy and Porphyric Disease.- The Effect of Solution pH on the Aggregation Degree of Hematoporphyrin Diacetate.- Photocarcinogenesis.- Possible Effects of Increased Ultraviolet Radiation on Human Skin.- Ozone Depletion and Skin Cancer.- Risk Factors for Skin Melanoma.- Prevention of Photocarcinogenesis by Sunscreens.- Light Sensitive Skin Diseases.- Advances in the Photodermatoses.- Persistent Photosensitivity Induced by Ingested Drugs.- DNA Repair and Light Sensitivity in Dermatology.- Chromophore -- Matrix Interaction.- Covalently Linked Porphyrin Dimers as Model Systems of the Photosynthetic Special Pair: Spectroscopy, Energetics and Photochemistry.- Hole Burning Spectroscopy of Chromoproteins.- The Jahn-Teller Effect in Porphyrins and Hemoproteins.- Fluorescence Site Selection Spectroscopy on Heme Proteins.- Spectroscopy.- Correlation Between Protein Structure and Room Temperature Phosphorescence of Tryptophans.- Dynamic Behavior of Cell Surface Receptors as Revealed by Laser Excited Fluorescence Spectroscopy.- Resolved Qx and Qy Electronic Transitions in Chlorophyll a.- Laser-Induced Time-Resolved Fluorescence Studies of Biological Systems.- Laser-Induced Multi-Step Processes in Chromophores of Biomedical Interest.- CLED-Pumped Solid-State Lasers (Microlasers): Potential Applications to Medicine.- Photosensitized Luminescence of Singlet Molecular Oxygen: Mechanisms and Application for Photobiology and Photomedicine.- DNA Damage and Repair.- Structure of Nucleic Acid Photoproducts.- Mammalian DNA Repair Mutants: Recent Progress in the Genetic and Molecular Biology of the Processing of DNA Lesions Induced by UV and by DNA Cross-Linking Agents.- Poly ADP-Ribosylation in DNA Damage Processing.- Considerations on the Mechanisms of UV-Induced Mutagenesis.- Survival, Dimer Induction and Repair in Human Keratinocytes and Melanocytes After UV Irradiation.- Effect of Genotoxic Environment or Treatment on DNA Repair of UV Light Induced Damage of Lymphocytes.- Laser UV Inactivation.- Picosecond Laser UV Inactivation of ? Bacteriophage and Various Escherichia coli Strains.- Photosensitivity in Microorganisms.- Photoreception in Unicellular Flagellates: Bioelectric Phenomena in Phototaxis.- Photoreceptors and Photomovements of Microorganisms.- Photosensitive Pigments.- Retinal Isomers in Photo- and Electroinduced Rhodopsin Intermediates.- Archaerhodopsins: Novel Bacterial Proton Pumps.

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