Millions of species currently exist on earth, and to secure an understanding of how all this magnificent variety arose is no small task. Biologists have long accepted Darwinian selection as the central explanation of adaptation and evolutionary change; yet, to date, no similar agreement has emerged about evolutionary processes that can create two species out of one. Almost 150 years after Darwi...

OBJECTIVE To report the first Ilheus arboviruses isolated from wild birds and analyze its public health impact. METHODS Wild birds and mammals were captured using mist nets and Tomahawk traps, respectively. Blood samples were drawn from these animals and inoculated intracerebrally in Swiss suckling mice found in the Parque Ecológico do Tietê, Brazil. The isolates were identified by serologica...

Abstract The emergence of reproductive isolation is key in maintaining within- and between-species diversity one the initial steps speciation. In Iberian Peninsula, diverging populations Brachionus plicatilis rotifer create an ideal system to shed light on mechanisms that give rise isolation. Herein, we quantify degree behavioural two groups B. populations, namely, neighbouring by adaptation lo...

BACKGROUND The addition of a mitral isthmus (MI) block line after pulmonary vein isolation could lead to a favorable outcome of catheter ablation in patients with atrial fibrillation (AF). However, it is sometimes tough to create a complete MI block line, and the cooling effect because of the local coronary flow may prevent the creation of a successful MI block line. METHODS AND RESULTS This ...

oak trees cover a wide range of forests in iran and most of them are located in kohgiloye and boyer-ahmad province (k.b). the high tannin is one of the anti-nutritional characteristics of acorn for domestic animal. wide range of gut microorganisms could tolerate tannin and reduce it by producing tannase enzyme. this study was carried out to isolate and identify the tannin resistance bacteria (t...

α-galycoceramide (α-galcer) or the common name of krn7000 is an α-gelasphin derivative. the α-galcer structure consists of a galactose combined with a ceramide in an α-configuration. social isolation (si) has been linked with enhanced inflammation, through modifications in transcriptional pathways linked with glucocorticoid, to stress. our hypothesis is to investigate mediatory role of glucocor...

mitochondria play key roles in many cell functions including energy production, fatty acid metabolism, pyrimidine biosynthesis, calcium homeostasis, and aging. they also regulate crucial signaling cascades such as apoptosis and oxidative stress. the proteome is often used to investigate the functional correlations on protein levels. based upon the human, genome there is estimated 2000 to 2500 a...

background: campylobacter jejune and c. coli are recognized as the most common bacteriological causes of gastroenteritis in humans. in this study identification of campylobacter jejuni and campylobacter coli from samples using pcr was explored. methods: detection was performed using diarrheal samples collected 8 from 117 children. the genomic dna of samples was extracted by phenol-chloroform me...

This is an essay in the sociology of knowledge. It aims to demonstrate, firstly, how development institutions construct rural society in terms of organizational imperatives, and secondly, how these ‘constructions’ come to be underpinned by social theory. The focus is on irrigation in south India and colonial and contemporary state policy initiatives to promote local institutions for the communi...

background: the aim of the study was to provide a point of reference to study the neospora caninum infections in china. methods: genome dna was extracted from the brains of aborted fetuses and specific pcr was performed with n. caninum nc5-targeted specific primers. fetal bovine brain tissues were homogenized and continuously cultured in vero cells with double antibodies. the medium was replace...