As breeding between relatives often results in inbreeding depression, inbreeding avoidance is widespread in the animal kingdom. However, inbreeding avoidance may entail fitness costs. For example, dispersal away from relatives may reduce survival. How these conflicting selection pressures are resolved is challenging to investigate, but theoretical models predict that inbreeding should occur fre...

The temperate Salmonella enterica bacteriophage L is a close relative of the very well studied bacteriophage P22. In this study we show that the L procapsid assembly and DNA packaging genes, which encode terminase, portal, scaffold, and coat proteins, are extremely close relatives of the homologous P22 genes (96.3 to 99.1% identity in encoded amino acid sequence). However, we also identify an L...

BACKGROUND Suicide is the second or third cause of death among Chilean teenagers aged 15 to 19 years. AIM To evaluate familial risk factors associated to suicidal attempt in adolescents with a depressive disorder. MATERIAL AND METHODS Thirty two teenagers with depression, aged between 13 and 18 years, receiving psychological treatment in six public Mental Health Centers in Santiago and 32 f...

objective: schizophrenia and other psychoses have devastating personal and social impacts and many efforts have been devoted to study ‎prodromal syndromes for psychosis in order to achieve earlier detection and interventions. however, only few studies have been ‎performed in developing countries on this subject, and there is a dearth of evidence in the iranian population. in this study, we ‎foc...