background: the aim of this study was to determine intestinal and liver helminth infections in rattus rodents in tehran iran. methods: overall, 306 traps were put in 39 different regions in tehran from 2009 to 2010. rodents, including r. rattus and r. norvegicus were caught by live-traps.they become unconscious and the spinal cords were cut, afterwards the body was dissected and the stomach, sm...

BACKGROUND The aim of this study was to determine intestinal and liver helminth infections in Rattus rodents in Tehran Iran. METHODS Overall, 306 traps were put in 39 different regions in Tehran from 2009 to 2010. Rodents, including R. rattus and R. norvegicus were caught by live-traps. They become unconscious and the spinal cords were cut, afterwards the body was dissected and the stomach, s...

A soluble fructose-1,6-bisphosphate aldolase enzyme has been purified 50.2-fold (2.36%) at the homogeneity from the electric organ of Electrophorus electricus by one step of DEAE-52 anion exchange chromatography followed by Superose-12 gel filtration-FPLC. Like other aldolase enzymes the E. electricus protein is a dimer with two identical subunits of 45 kDa. The N-terminal (20 residues) reveale...

genus rattus from the subfamily murinae has a wide geographical distribution throughout the world. three species of this genus have been reported in iran so far. they are norway or brown rat (rattus norvegicus), black rat (rattus rattus), and himalayan rat (rattus pyctoris). in order to verify the possibility of using electrophoretic patterns of special proteins, in biosystematic analysis of th...

We postulate that the large difference in infection prevalence, 24% versus 5%, in R. norvegicus and R. rattus, respectively, between these two co-occurring host species may be due to differences in ectoparasite and potential vector infestation rates. A compartmental model, representative of an infectious system containing these two Rattus species and two ectoparasite vectors, was constructed an...