A blocker of postsynaptic acetylcholine receptors was isolated from venom of the Eastern green mamba Dendroaspis angusticeps, by gel filtration, ion-exchange and reverse phase high performance liquid chromatography. The isolated component blocks neuromuscular transmission and responses to exogenously applied acetylcholine in isolated chick biventer cervices preparations. These results suggest t...

The presence of gigantic apex predators in the eastern Panthalassic and western Tethyan oceans suggests that complex ecosystems in the sea had become re-established in these regions at least by the early Middle Triassic, after the Permian-Triassic mass extinction (PTME). However, it is not clear whether oceanic ecosystem recovery from the PTME was globally synchronous because of the apparent la...

Ethical issues regarding research biobanks continue to be a topic of intense debate, especially issues of confidentiality, informed consent, and child participation. Although considerable empirical literature concerning research biobank ethics exists, very little information is available regarding the opinions of medical professionals doing genetics research from the Middle East, especially Ara...

The Halecomorphi are a major subdivision of the ray-finned fishes. Although living halecomorphs are represented solely by the freshwater bowfin, Amia calva, this clade has a rich fossil history, and the resolution of interrelationships among extinct members is central to the problem of understanding the origin of the Teleostei, the largest clade of extant vertebrates. The Ionoscopiformes are ex...

BACKGROUND Health literacy is a term employed to assess the ability of people to meet the increasing demands related to health in a rapidly evolving society. Low health literacy can affect the social determinants of health, health outcomes and the use of healthcare services. The purpose of the study was to develop a survey construct to assess health literacy within the context of regional cultu...

the us foreign policy processes in the middle east, in the post world war ii period, have always brought about security challenge, danger and crisis, in the region. all us presidents have experienced grave security crisis in this geopolitical area. there also exists many indications of distrust of the current foreign us policy exercised in the middle east on the part of middle eastern citizens....

one of the important issues in the middle east country is trying to establish or revive nuclear program over the past few years. this subject can have peaceful or military dimension & components of power and security can be affected. the regional country insisted on its being non-nuclear by 2006. but from this time, gradually altered the traditional approach of these countries on the nuclear is...

Morphine is one of the more ancient medicines known, yet the global access to this opioid is still severely limited. In spite of the fact that strong networks for national, regional and global care have been emerging, the overall situation of pain management, in general, and in cancer patients in specific, remains of great concern; when we examine the availability of pain relief drugs in Middle...