Prion diseases, also known as Transmissible Spongiform Encephalopathies (TSEs), exist in both humans (Creutzfeldt-Jakob disease (CJD)) and animals (scrapie, bovine spongiform encephalopathy (BSE), chronic wasting disease) and have the unique property of being infectious, sporadic or genetic in origin.

Although the precise nature of the infectious agent responsible for TSEs is not definitely identified, it is now clearly demonstrated that a protein named PrP (for Prion Protein) plays a critical role in the transmission and pathogenesis of TSEs.

This book provides the general...

Natural toxins form a major component of the molecular tools used increasingly frequently by the ever growing number of laboratories of various kinds. Evidence for this is provided not only by the increasing number of firms including such toxins in their catalogues but also by the large number of demands received by those who discover new toxins. Twenty chapters survey important aspects of toxin origin, their structure and molecular mechanism, and their cellular and pathogenic effects. In addition, the text provides comprehensive and specific methodology for the application of these toxins in...

The technique of needle microinjection has become a prominent experimental approach in biological research. Cellular organelles, DNA and RNA, enzymes, structural proteins, metabolites, ions and antibodies are just some of the molecular and cellular elements that have been transposed from test tubes into living cells by needle injection. This technique is broadly used as a valuable tool for the study of many different cell responses in a variety of systems. This text presents information on the technique of needle microinjection's principles, the required equipment, preparation of receiving...