Studies on the Secretory Structures in Seniawin St John‘swort (Hypericum seniawinii) Studies on Tissue Culture and Plantlet Regeneration of Common St. John‘swort (Hypericum perforatum) Studies on the Secretory Structure of Hypericum erectum The Patterns of Secretory Structure and Their Relation to Hypericin Content in Hypericum The Secretory Structure of Hypericum perforatum and Its Relation to Hypericin Accumulation Variation of Bioactive Compounds in Hypericum perforatum Growing in Turkey During Its Phenological Cycle Pseudohypericin and Hyperforin in Hypericum perforatum from Northern Turkey: Variation among Populations, Plant Parts and Phenological Stages Induction of Callus of Hypericum perforatum L. and Qualitative Identification of Active Constituents of its Callus Determining the Quantity of Hypericin in Medicinal Materials and Asepsis Seedings of Hypericum perforatum by HPLC Effect of Factors on Callus Biomass and Synthetic Mass of Hypericin in Hypericum perforatum Synthesis and Accumulation of Hypericin in Hypericum perforatum L. Studies on the development of secretory structures and their secretory products accumulation of Hypericum perforatum Photodynamic therapy with hypericin and its signaling pathway system of apoptosis and antiapoptosis Studieson the relation between secretory structures and itssecontary product in Hypericum sampsonii Analysis of the Chemical Constituents of Hypericum hubeiense by HPLC/DAD/ESI-MS Changes in physiological and biochemical characteristics, contents of bioactive compounds, and antioxidant capacity of Hypericum perforatum during introduction and acclimatization Studies on the choice of conditions for the extraction of hypericin from Hypericum perforatum Ultrastructure of the Multicellular Nodules in Hyperic um perforatum Leaves Effect of hypericin on myocardial fibrosis of chronic viral myocarditis of mice and its mechanism