Group A streptococci produce a wide variety of extracellular (cell-associated and released) virulence factors. The function of these factors varies and includes roles in adhesion, spreading, tissue destruction, immune system evasion, and cell toxicity. How these factors are regulated with regard to one another is important for this organism s ability to bring about the variety of diseases this ...

Abstract In this paper, we use the Domar aggregation approach to study evolution of Brazil’s productivity growth from 2000 2014, thus allowing us a disaggregated assessment issue. We found that Brazilian economy’s overall performance is outcome decrease in density, as defined by existing backward and forward connections amongst industries intermediate inputs chains. It also can be explained poo...

abstract background: regarding the importance of health care providers such as nurses who are always in stressful environments, it is imperative to better understand how they become more engaged in their work. the purpose of this paper is to focus on health care providers (nurses), and examine how the interaction between spiritual intelligence and psychological empowerment affect job engagement...