470 Extracardiac endothelium patterns embryonic coronary arterio-venous connections JM. Perez-Pomares1; E. Cano2; R. Carmona1; A. Ruiz-Villalba3; A. Rojas4; Y-Y. Chau5; KD. Wagner6; N. Wagner6; ND. Hastie5; R. Munoz-Chapuli1 University of Málaga, Málaga, Spain; Max Delbruck Center for Molecular Medicine, Berlin, Germany; University of Navarra, Pamplona, Spain; Centro Andaluz de Biologı́a Molecul...

Et Tu, Torsten? This critique of my Economic Policy paper generates many emotions. It is certainly an honor for my research to be taken seriously by such an eminent scholar as my friend Torsten Persson. And while any publicity is good, a negative citation dominates a positive one. There is irony; I came up with the original idea in a hallway conversation with Harry Flam a few feet from Persson’...

A traditional view of the nature of species holds that populations within species maintain genetic cohesion through substantial intraspecific gene flow and that the whole genome of a species is protected from interspecific gene flow by strong reproductive isolation. Both aspects of this view have been challenged. Reproductive barriers between recently evolved species can be incomplete and perme...

This paper describes and discusses the impacts of the passage of cold fronts on the vertical structure of the Carlos Botelho (Lobo-Broa) Reservoir as demonstrated by changes in physical, chemical, and biological variables. The data were obtained with a continuous system measuring 9 variables in vertical profiles in the deepest point of the reservoir (12 m) coupled with climatological informatio...

Two new species of Dolichothele Mello-Leitão, 1923 are described from Brazil and Bolivia, D. mottaisp. n. from Distrito Federal and the state of Goiás, Brazil, and D. camargorumsp. n. from the state of Rondônia, Brazil, and the La Paz region, Bolivia. Males of the two new species resemble Dolichothele bolivianum (Vol, 2001) in having a small subapical keel on the distal embolus and females in p...

Shigellosis, which is characterized by diarrhea and dysentery, is a worldwide human health problem caused by the Shigella group of bacteria (Niyogi, 2005). These bacteria produce a toxin, Shiga toxin, that is comprised of two components referred to as A and B, in which the A subunit is the enzymatically active toxin responsible for inactivation of the 28s ribosomal RNA, and the B subunit is req...

Each year more than a million Americans suffer heart attacks and strokes. Most of these events result from the sudden thrombotic occlusion of a coronary or cerebral artery at the site of an atherosclerotic plaque (Corti et al., 2002). Tissue solely supplied by the occluded artery becomes hypoxic/anoxic. Oxygenation of surrounding tissue with collateral blood supply may also be compromised. At t...

Many animals, especially arthropods, use substrateborne vibration signals in communication (Hill 2008, 2009). Substrate-borne vibrations have been demonstrated as an important mode of communication in bugs (Virant-Doberlet & Cokl 2004; Cocroft & Rodriguez 2005; Rodriguez et al. 2008), lacewings (Henry 1994; Henry et al. 2002), wolf spiders (Uetz & Roberts 2002; Hebets & Papaj 2005; Gibson & Uet...

Declaration of interest None. Neuropsychological studies (Alexopoulos et al, 2000), structural neuroimaging studies (Alexopoulos et al, 2002) and functional neuroimaging studies (Kumar et al, 2002; Navarro et al, 2002) have suggested the possible involvement of the frontal lobes in the physiopathology of late-onset major depression. Various structural neuroimaging studies have stressed the poss...

Thymic epithelial tumors account for 15-21.7% of mediastinal tumors and 47% of anterior mediastinal tumors (Chen et al., 2002; Engels and Pfeiffer, 2003). Until 2004, there was a wide range of pathological classifications for thymic tumors (Travis et al., 2004; Okumura et al., 2008). The World Health Organization (WHO) updated the pathological classification in 2004, and thymic tumors are now c...