Background This prospective study was designed to examine the role of fibrosis staging on selection and success of treatment options for autoimmune hepatitis (AIH). Materials and Methods The project was conducted on 110 selected AIH patients who, based on the results of liver biopsy, had been assigned into one of the three groups (mild, stages 1 and 2, moderate, stages 3 and 4, and severe, stag...

Can the evolution of plant defense lead to an optimal primary production? In a general theoretical model, Loreau (1995) and de Mazancourt et al. (1998, 1999) have shown that herbivory could increase primary production up to a moderate rate of grazing intensity through recycling of a limiting nutrient, provided several conditions are fulfilled. In the present paper, we assume: (1) grazing intens...

Epidemiologists are often interested in examining the effect on a later-life outcome of an exposure measured repeatedly over the life course. When different hypotheses for this effect are proposed by competing theories, it is important to identify those most supported by observed data as a first step toward estimating causal associations. One method is to compare goodness-of-fit of hypothesized...

By deliberation we understand practical reasoning with an end in view of choosing some course of action. Integral to it is the agent's sense of alternative possibilities, that is, of two or more courses of action he presumes are open for him to undertake or not. Such acts may not actually be open in the sense that the deliberator would do them were he to so intend, but it is evident that he ass...

Response selection activates appropriate response representations to task-relevant environmental stimuli. Research implicates dorsolateral prefrontal cortex (dlPFC) for this process. On the other hand, studies of semantic selection, which activates verbal responses based on the semantic requirements of a task, implicate ventrolateral PFC (vlPFC). Despite this apparent dissociation, the neurocog...

We examine properties of adaptive walks on uncorrelated (i.e. random) fitness landscapes starting from moderately fit genotypes under strong selection weak mutation. As an extension of Orr's model for a single step in an adaptive walk under these conditions, we show that the fitness rank of the dominant genotype in a population after the fixation of a beneficial mutation is, on average, (i+6)/4...