In 1948, Duggan and Luck (1) observed that certain organic anions in appropriate concentrations prevented the rise in viscosity of bovine serum albumin caused by 6 M urea. Among the anions studied, dodecyl sulfate was found to be the most effective. In 1957, Markus and Karush (2) showed that the rise in levorotation of human serum albumin caused by 6 M urea could also be prevented or reversed b...

introduction: cigarette smoking affects nitric oxide production. the aim of this study was to determine associations between tobacco smoke and serum nitric oxide metabolites (nox) concentration. methods: serum nox concentration was measured by the griess method in 230 nonsmokers, 238 active, 196 passive and 29 waterpipe smokers. subjects were selected from participants of tehran lipid and gluco...