inorganic lead compounds are used most widely in paint and pigment industries. because of exposure to lead dust in workers in a copying center, we compared blood lead levels in these workers to normal individuals and investigated the relationship between job tenures of the workers and their blood lead levels. this survey was performed on 20 simple workers in a copying center of tehran universit...

A box-shaped 3D-DNA origami has been successfully constructed by selective closing of a preformed open motif, and identified by atomic force microscopy and dynamic light scattering analysis.