Being the principal causative agent of bacterial pneumonia, otitis media, meningitis and septicemia, the bacterium Streptococcus pneumoniae is a major global health problem. To highlight the molecular basis of this problem, we have portrayed essential biological processes of the pneumococcal life cycle in eight watercolor paintings. The paintings are done to a consistent nanometer scale based on currently available data from structural biology and proteomics. In this review article, the paintings are used to provide a visual review of protein synthesis, carbohydrate metabolism, cell wall synthesis, cell division, teichoic acid synthesis, virulence, transformation and pilus synthesis based on the available scientific literature within the field of pneumococcal biology. Visualization of the molecular details of these processes reveals several scientific questions about how molecular components of the pneumococcal cell are organized to allow biological function to take place. By the presentation of this visual review, we intend to stimulate scientific discussion, aid in the generation of scientific hypotheses and increase public awareness. A narrated video describing the biological processes in the context of a whole-cell illustration accompany this article.
This article presents the results of a content study of how nanotechnology has been framed in Danish national newspapers by taking a random sample of 250 articles published between 1996 and 2006 from a population of 1,062 articles. The articles were analyzed for “dominant frame” and “dominant tone” with respect to risks and benefits of nanotechnology. The findings demonstrate a remarkable positive tone in the articles with a ratio of ten to one in favor of “benefits outweigh risks” versus “risks outweigh benefits.” Using data from this content study the author analyzes patterns of newspaper attention and framing. The data are used in a comparative study to challenge simplistic narratives of general similarities and differences between European and US contexts, making a claim for paying more attention to local cultural and national contexts in studies of media coverage of emerging technologies.
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