elevated amount of the free radicals due to ionizing radiation causes deteriorating damage on immune system. therefore, we made attempts to investigate the protective effect of vitamin e (vit-e), a biological antioxidant in balb/c mice, so as to find an affordable prophylactic supplementation for individuals who are at risk. several groups of mice were selected and exposed to sub-lethal g -irra...

background: toxoplasma gondii is an obligate intracellular parasite that infects all mammalian cells. several antigens such as excreted/secreted antigens have been identified as a potential vaccine candidate. objective: to determine how excreted/secreted antigens from peritoneal exudates of infected mice (mesa) stimulate cell-mediated immune responses and induce protective immunity against toxo...

in the software development process, testing is one of the most human intensive steps. many researchers try to automate test case generation to reduce the manual labor of this step. negative selection is a famous algorithm in the field of artificial immune system (ais) and many different applications has been developed using its idea. in this paper we have designed a new algorithm based on nega...

mastitis is a one of the major diseases of dairy animals. staphylococcus aureus is the most common microorganism associated with this dairy scourge. cure rates of mastitis associated with this pathogen are appallingly low. biofilm is an important virulence factor and immunogenic structure of s. aureus that makes it resistant to phagocytosis and antibiotics. reports on the efficacy of vaccine pr...

this experiment was conducted to study the effect of dietary n-3 to n-6 ratio on performance, immune response, blood parameters and fatty acids profile of broiler chickens. a total number of 192 one day old broiler chicks were randomly alloctted into 6 groups. chicks of groups 1, 2, 3, 4, 5 and 6 were fed balanced corn-soybean diets containing n-3 to n-6 ratios of 1:1, 1:3, 1:5, 1:7, 1:9 and 1:...

the prevalence of hepatitis c virus (hcv) is approximately 3% around the world. this virus causes chronic hepatitis, liver cirrhosis and hepatocellular carcinoma. the effectiveness of interferon-α and ribavirin therapy is about 50% and is associated with significant toxicity and cost. hence, generating new vaccines or drugs is an obligation. however, there is no vaccine available for clinical u...

this study was conducted to investigate the effects of the medicinal plant yarrow (achillea millefolium l.), a probiotic (primalac) and an antibiotic (virginiamycin) on gastrointestinal tract (git) characteristics, microbial populations, immune response, serum lipids and growth performance of broiler chickens. a total of 250 one-day old male broilers (ross 308) were randomly allocated to 5 trea...

background & aim: aflatoxin (af) is the most important fungus that contaminates food and feed and can enter the food chain of humans. the aim of this study was to investigate the ability of thistle seeds (silybum marianum l.) to reduce the adverse effects of aflatoxin b1 (afb1) on the immune system, variables related to the intestine, appearance and mortality of the broiler chickens. exper...

background: black seed (nigella sativa l.) in traditional medicine is well known that the chemical composition of the immune system with many applications in traditional medicine to fight the infection. this study investigated the effect of the plant's role in the immune system and blood protein. experimental: in this study male mice of balb/c strain were divided into four groups tested. contr...