The Abelson murine leukemia virus (Ab-MLV), like other retroviruses that contain v-onc genes, arose following a recombination event between a replicating retrovirus and a cellular oncogene. Although experimentally validated models have been presented to address the mechanism by which oncogene capture occurs, very little is known about the events that influence emerging viruses following the rec...

In this paper we review two recent paradigmatic shifts and consider how a two-way flow in innovation has been critical to the emergence of new thinking and new practices. The first area relates to our understanding of the nature of public health systems and the shift from a medical paradigm to a more holistic paradigm which emphasises the social, economic and environmental origins of ill-health...

Semitic word formation has proved particularly contentious over the past several years with respect to the notion of the 'root' and 'template'. While traditional grammarians viewed Semitic words as consisting of roots and patterns (involved in paradigmatic relations), this approach has proved insufficient for certain kinds of word-formation that appear to require correspondence between words, s...

Car-following models are among the most important components of micro traffic flow simulation which is studiedby transportation experts to evaluate new applications of intelligent transportation systems. Until now, several carfollowingmodels have been proposed. An obvious disadvantage of the former models is the great number of parameterswhich are difficult to calibrate. In th...

we described a case of lymphoid follicular hyperplasia that arose from the ileum of a 52-year-old woman. her colonoscopy revealed a large mass in the cecum associated with multiple polypoid lesions in the ileum. histologic examination demonstrated severe lymphocytic infiltration and lymphoid follicles with regular germinal centers, without evidence of malignancy. a right hemicolectomy was perfo...