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The mycoplasmas, a trivial name used to denote organisms included in the class Mollicutes, are a group of prokaryotic organisms comprising more than 120 species distinguished from ordinary bacteria by their small size and the total lack of cell walls. The absence of a cell wall in mycoplasmas is a characteristic of outstanding importance to which the mycoplasmas owe many of their pecu liarities, for example, their morphological instability, osmotic sensitivity, unique ion pumping systems, resistance to antibiotics that interfere with cell wall bio synthesis, and susceptibility to lysis by detergents and alcohols. The fact that the mycoplasma cells contain only one membrane type, the plasma m...
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This book and its companion, Volume II, concentrate on new procedures--especially those based on the new molecular methodology--developed within the past decade. This volume outlines the approaches, techniques, and procedures applied to cell and molecular biology studies of mycoplasmas. Volume II deals with the new genetic and immunological tools applied to the diagnosis of mycoplasma infections of humans, animals, plants, insects, and all cultures, with particular emphasis on the association of mycoplasmas with the activation of AIDS. Key Features* Cultivation and morphology* Genome characterization and genetics* Membrane characterization* Cell metabolism* Taxonomy and phylogeny* Pathogenicity
Basic concepts on biodegradable biopolymer science are presented in this book, as well as techniques, analyses, standards, and essential criteria for the characterization of biodegradable materials obtained from biopolymers. The development and innovation of products and processes considering the environment are highlighted in this book. All of the applications described have been discussed from the point of view of sustainability. Additionally, this book highlights that biodegradability is a great burden when trying to replace, modify, and/or design existing products, and processes that are highly polluting. Finally, the present book concludes with reflections on the development of biopolymers in different areas, and some of their consequences depending on their biodegradability.