background: there are many studies to investigate the effects of each interacting component of tumor-immune system interactions. in all these studies, the distinct effect of each component was investigated. as the interaction of tumor-immune system has feedback and is complex, the alternation of each component may affect other components indirectly. objective: because of the complexities of tum...

stevia rebaudiana bertoni is a medicinal, perennial and herbaceous plant from asteraceae family with sweet glycosides in its leaves. salinity stress is one of the important limiters in agricultural productions. salinity influences the growth and development of plant by effect on more activities in physiological and morphological characteristics. to study the effect of salinity on morphological ...

helicobacter pylori is related to iron deficiency anemia (ida) and inflammatory responses causing gastric and duodenal ulcer and carcinoma. moreover, it leads to deficiency of factors associated with iron adsorption and transfer. in the present study, we recruited 100 children (50 infected with h. pylori and 50 controls) aged 3-14 years old (40% male and 60% female) to evaluate the effect of h....

background: as we all know, sperm has the capacity to take up foreign dna, therefore, sperm mediated gen transfer can be an inexpensive and simple method in animal transgenesis in various species. however, there is not sufficient evidence of dna uptake by ovine spermatozoa. objectives: the purpose of the present study was to examine the uptake of human lysozyme gene contained plasmid (pegfp-ire...

the district of miyān kūh in the ardal town,chahār mahāl bakhtiari province, because of its high mountains, deep valleys and the fields among small mounts, being placed in the path of the was dering tribes has been the focus of the attention. the rigion has two different viewpoint. one part featuring the mounts chēhēl cheshme and gereh with the altitude of more than 3500 m., has cold winter and...

introduction rhodium metal is known for its stability in corrosive environments, physical beauty, and its unique properties. rhodium is now widely used for alloying platinum in thermocouples, crucibles, evaporating dishes, weighing boats windings for high-temperature furnaces. it has been applied as a coating material because of the hardness and luster of its surface. rhodium is present at abou...

linear furanocoumarins are toxic compounds synthesized by plants. these toxic natural products are usually found in the fruits of umbelliferae. heracleum persicum desf. ex fischer is an iranian aromatic medicinal plant from umbelliferae which their fruits are used as flavoring agent in food products. because of the wide usage of the fruits of h. persicum it was decided to do a phytochemical stu...

to provide reliable information concerning reproductive potential of hippodamia variegata goeze and its prey (aphis fabae), their related life tables were studied under controlled laboratory conditions (at 23?c). the unprocessed data of life tables were analyzed taking the euler-lotka as the basis model. standard error of population growth parameters was calculated using the jackknife re-sampli...

the aim of the present study is to assess the effect of pure and mixed plantations of eastern cottonwood (populus deltoides) and alder (alnus subcordata) on quantitative stand characteristics and soil properties. the experiment was established in 1994 using randomized block design with five treatments (1- p100%, 2- p67%-a33%, 3- p50%-a50%, 4- p33%-a67%, and 5- a100%) and four replicates in cham...