A highly efficient cloning vector was constructed for cloning PCR products by inserting an 80 bp DNA fragment into pGEM-5zf (+) vector. The Xcm I digestion of this vector gave rise to a 3' overhanging deoxythymidine offering the possibility of cloning PCR products with 3' adenosine overhang created by Taq DNA polymerase. Furthermore, two EcoR I sites were added to the construct for identificati...

a highly efficient cloning vector was constructed for cloning pcr products by inserting an 80 bp dna fragment into pgem-5zf (+) vector. the xcm i digestion of this vector gave rise to a 3’ overhanging deoxythymidine offering the possibility of cloning pcr products with 3' adenosine overhang created by taq dna polymerase. furthermore, two ecor i sites were added to the construct for identificati...

Background and Aims: In humans the group A rotaviruses are associated with endemic diarrhea in children under the age of 5, leading to approximately 800,000 deaths every year. Introduction of rotavirus vaccines into childhood immunization programs can contribute to substantial reduction in mortality from rotavirus gastroenteritis in developing countries and virtually eliminating hospitalization...

background and aims: in humans the group a rotaviruses are associated with endemic diarrhea in children under the age of 5, leading to approximately 800,000 deaths every year. introduction of rotavirus vaccines into childhood immunization programs can contribute to substantial reduction in mortality from rotavirus gastroenteritis in developing countries and virtually eliminating hospitalization...

The most important specific regulatory mechanism for hepatic angiotensinogen synthesis and secretion is its stimulation by angiotensin II, the effector peptide of the renin-angiotensin system. In the circulating system, this octapeptide is thought to stimulate hepatic angiotensinogen synthesis through a positive feedback loop. In the present study, we have identified the intracellular mechanism...

Background: Recombinant insulin glargine, a long-acting analogue of insulin, is expressed as proinsulin in host cell and after purification and refolding steps cleaved to active insulin by enzymatic digestion using trypsin and carboxypeptidase B. Since the proinsulin's B and C chains have several internal arginine and lysine residues, a number of impurities are generated following treatment wit...

Abstract Background and Aims: Influenza A(H5N1) viruses  circulating in animals might evolve and acquire the ability to spread from  human to human and thus start a pandemic. Hemagglutinin (HA) has been shown to play a major role in binding of influenza virus to its target cell and the main neutralizing antibody responses elicit against this region. Recent studies have shown that...

abstract background and aims: influenza a(h5n1) viruses  circulating in animals might evolve and acquire the ability to spread from  human to human and thus start a pandemic. hemagglutinin (ha) has been shown to play a major role in binding of influenza virus to its target cell and the main neutralizing antibody responses elicit against this region. recent studies have shown that glycosylation ...