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Neutron Therapy: An Experimental System in Radiooncology. The history of the use of neutrons in radiotherapy will be revisited by focusing on the ideas, theories and experiments that led to first clinical studies. For addressing epistemological questions regarding biological effects of fast neutrons, the notion of an "experimental system" is employed and its evolution over time discussed.

Automated production of recombinant human proteins as resource for proteome research.

Background: An arbitrary set of 96 human proteins was selected and tested to set-up a fully automated protein production strategy, covering all steps from DNA preparation to protein purification and analysis. The target proteins are encoded by functionally uncharacterized open reading frames (ORF) identified by the German cDNA consortium. Fusion proteins were produced in E.

Large-scale protein expression for proteome research.

Access to pure and soluble recombinant proteins is essential for numerous applications in proteome research, such as the production of antibodies, structural characterization of proteins, and protein microarrays. Through the German cDNA Consortium we have access to more than 1500 ORFs encoding uncharacterized proteins. Preparing a large number of recombinant proteins calls for the careful refinement and re-evaluation of protein purification tools.