Nuclear intermolecular duplexes appear to be a general feature of nucleated cells. Most of these duplexes are formed between large RNA as well as between large and small RNA molecules. A significant portion of the large molecules belong to a special class of RNA that is restricted to the nucleus and, therefore, not designated for export. These molecules are assembled with proteins and form a structure of a higher order. The possibility that these molecules and a set of small nuclear (...) RNAs are components of a complex machine, “the transportosome”, which functions in nucleocytoplasmic traffic, is discussed. (shrink)

The book presents the most relevant theories of truth (correspondence, semantic, deflational, pragmaticist, coherentist, constructivist, evidential), with the emphasis of analytical approaches. The author develops a version of the realist correspondence concept of truth while distinguishing various criteria of truth. He is skeptical in regard of any, complete or certain truth but he does not accept epistemic skepticism either, but argues for a moderate realism where objective orientation towards truth suffices as catching (ever) more truth than falsity.