A number of antigens in unfertilized eggs and embryos of the sea urchin Paracentrotus lividus were characterized with respect to both immunological and physicochemical properties. Experiments involved single diffusion in agar (Oudin technique) combined with mutual dilution, serial dilution, and heating of antigenic extracts, as well as immunoelectrophoresis with normal and heated extracts and a...

Much of the attention on the economic aspects of the forthcoming enlargement of the EU have concentrated upon the high-profile issues which are linked to the level of relative economic development in the acceding countries; the perceived threat of large-scale migration and the budgetary costs arising from implementation of EU agricultural and regional policies. This paper briefly discusses that...

Today, there are a few dozens of historical index houses in the city Sabzevar. Reviews show that up until now, despite the presence of their special characteristics, variety and role, there have not been comprehensive studies about them but through the presence of valuable samples from various historical periods (Teymouri, Safavid, Qajar, Pahlavi), their exposure to destruction through changing...

Understanding connectivity patterns has implications for evolutionary and ecological processes, as well as for proper conservation strategies. This study examined population genetic structure and migration patterns of the coral Mussismilia hispida, one of the main reef builders in the Southwestern Atlantic Ocean. For this, 15 sites were sampled along its entire distributional range employing 10...

migration and quality of redistribution of population across country is one of the main factors that planners take into account to control population and guide its movements to economic poles. scientific recognition of migration phenomenon is important for managing and policy making in the country. these movements change migration pattern, in a way that along with increase in population and the...

Nanofibers play a significant role in modulating tissue growth.[1][2][3] Applications include nerve regeneration, wound healing, hernia repair, and repair of musculoskeletal tissues. Cells sense environments via signal transduction pathways, which can lead to changes in cell shape, proliferation rates, gene expression, and differentiation.[4] Integrins are a type of protein that exists on the c...

The effectiveness of migration policies has been widely contested in the face of their supposed failure to steer immigration and their hypothesized unintended, counterproductive effects. However, due to fundamental methodological and conceptual limitations, evidence has remained inconclusive. While the migration policy research is often descriptive and receiving-country biased, migration determ...

Contact inhibition of locomotion (CIL) is the process whereby cells collide, cease migrating in the direction of the collision, and repolarize their migration machinery away from the collision. Quantitative analysis of CIL has remained elusive because cell-to-cell collisions are infrequent in traditional cell culture. Moreover, whereas CIL predicts mutual cell repulsion and 'scattering' of cell...

Cell migration is a fundamental process throughout the lives of multicellular organisms as well as in the onset of several diseases including cancer formation and metastasis. Microtubules (MTs) and filamentous actin, the two major components of the internal scaffolding of all cell types, are important in several steps of the cell migration cycle and understanding their mutual regulation or “cro...