We have previously demonstrated that inactivation of the Krox20 gene led to the disappearance of its segmental expression territories in the hindbrain, the rhombomeres (r) 3 and 5. We now performed a detailed analysis of the fate of prospective r3 and r5 cells in Krox20 mutant embryos. Genetic fate mapping indicates that at least some of these cells persist in the absence of a functional Krox20...

BACKGROUND HIV-1 R5 viruses are characterized by a large phenotypic variation, that is reflected by the mode of coreceptor use. The ability of R5 HIV-1 to infect target cells expressing chimeric receptors between CCR5 and CXCR4 (R5(broad) viruses), was shown to correlate with disease stage in HIV-1 infected adults. Here, we ask the question whether phenotypic variation of R5 viruses could play ...

abstract almond is an important nut tree which is cultivated in many mediterranean countries. this study was carried out to study some vegetative and reproductive traits as well as qualitative and quantitative characteristics and their correlation in some self-compatible and self-incompatible genotypes obtained from crossing between touno (male parent) and shahrood 12 (female parent). quantitat...

Wet snow events in Hungary can occasionally cause damage to overhead power lines and serious supply failures. Return period calculation of such high mass was determined upon a 50-year long data series available at 12 meteorological stations. masses were estimated with model cylindrical accretion around wire 3.1 cm diameter. Trends the return periods ice classes (according ISO 12494 standard) as...

BACKGROUND There is a paucity of data on lung physiology in late-preterm children, who may be exposed to a risk of decline in lung function during childhood. In this study, we evaluated lung function in preschool children born late preterm using impulse oscillometry (IOS), and compared the results with those obtained in healthy term-born children. METHODS Children between 3 and 7 years of age...

Stigmatic receptivity restricts the successful pollination in cereal crops. The present study deals with the biochemical test for enzymes producing in stigma of field crops such as Indian mustard, rice and wheat. The alcohol dehydrogenase and hydrogen peroxide assays revealed stigmatic receptivity as a violet color and oxygen bubbles released by the chemical reaction. Therefore, the 2 quick tes...

Background: The Cutometer MPA 580® (Courage and Khazaka, Germany) is a well-established instrument for the accurate reproducible measurement of biomechanical properties skin. purpose this study was to assess effect 4 formulations containing 2.5% 5.0% α-lipoic acid ascorbic palmitate or butylhydroxytoluene on skin elasticity firmness equivalence between alternative parameters (Q0, Q1 Q3) traditi...