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Recent advances in understanding the biological role of singlet oxygen in the pathways of cellular responses to ultraviolet-A radiation: its key position in photodynamical effects, and its generation by photochemical (dark) reactions, e.g. by cells of the immune system such as eosinophils and macrophages, are the focus of this volume. The new methods and techniques responsible for the rapid progress in this area are presented. The critically acclaimed laboratory standard for more than forty years, Methods in Enzymology is one of the most highly respected publications in the field of biochemistry. Since 1955, each volume has been eagerly awaited, frequently consulted, and praised by researchers and reviewers alike. Now with more than 300 volumes (all of them still in print), the series contains much material still relevant today--truly an essential publication for researchers in all fields of life sciences.
Progress made in the last 20 years clearly indicates that the cell surface is an extremely dynamic structure involved in fundamental processes such as cell motility, innervation, and cell adhesion. Of particular interest is the finding that, in several tissues, the cell surface is differen tiated at the intercellular region, thereby providing communicating chan nels between apposing cells. Although our actual knowledge of the precise structures and mecha in the complex process of intercellular communication is still nisms involved scanty, evidence has been presented that ions and molecules diffuse from cell to cell, establishing a physiological continuum. Embryonic differentia tion, cell gro...
In Plain Sighthighlights a selection of natural wonders and outdoor adventures located in southern Alberta. The places featured in this book have been chosen for their utter uniqueness, beauty and splendour. Some are easy to get to and easy to get around in; others require a bit more time and energy. Overall, you will be stimulated, enlightened, delighted, amazed, uplifted and broadened by the experience. These are truly awesome places, in the very real denotation of that adjective. All are in plain sight, though they are little visited by locals or tourists. The book contains chapters on Waterton Lakes National Park, Writing-on-Stone Provincial Park, Cypress Hills Interprovincial Park, Dinosaur Provincial Park, the Whaleback and a number of other special places. The narrative covers the geological record and the natural and human history of the places in order to explain how each locale is unique and worthy of further investigation.
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