this experiment was conducted to evaluate the effects of different levels of zinc on the performance and humoral immunity response in broiler chickens with 250 ross broiler chickens with five experimental treatments consisted of five replicates in a completely randomized design. treatments were diets containing: basal diet (control) and basal diet plus 40, 80, 120 and 160 mg zn/kg. results of t...

the evaluation of immune status to measles among school children in south of tehran, blood samples were collected from 375 randomly selected school children of elementary schools, junior high schools and high schools. the measurement of measles antibody titer was made by haemagglutination inhibition test, with antibody titer > 1/4 considered as positive. among 375 school children, 6% of them we...

altogether, 120 rodents of 4 species were trapped alive in various parts of meshkin-shar district where visceral leishmaniasis is endemic. 13 of them were cricetulus migratorius (gray hamste) that all were caught inside the living rooms. nine of them showed leishmania antibody in titers of ≥ 1:100 in direct agglutination test (dat) and amastigotes were found in the spleen smears of 2 cricetulus...

in the present study the distribution of rubella hemagglutination inhibition (hi) antibody titer in the sera of 1486 women of 18 to 25 years old residing in tehran were examined. sera were pretreated with acid washed kaolin and pigeon red blood cell. titers below 1:10 and in some studies below 1:20 are considered nonimmune to rubella. our results show that 10, 29% of studied population had hi a...

Background: Patients with end stage renal disease have higher incidence of infection dis-eases that is thought to be related to impaired immune system. Objective: To determine the antitetanus IgG antibody level in Iranian hemodialysis patients with end stage renal disease and to find its association with sex, age, blood hemoglobin, serum albumin, dura-tion of dialysis, time of dialysis per week...

A passive hemagglutination (PHA) test for measles was evaluated in comparison with hemagglutination inhibition (HI) and neutralization (NT) tests. The PHA test determines exclusively the level of antibody directed to the hemagglutinin protein of measles virus. The ratio of PHA to HI titer was 1 to 32 (geometric mean, 6.5) for the first 5 weeks of infection but declined to near unity thereafter....

this experiment was performed in order to determine effects of different levels of dietary l-threonine supplementation in male japanese quails’ diets on immune response, small intestinal morphology, blood parameters and microflora.one hundred and forty four, 1-d old japanese quails have been selected and randomly distributed between six treatments and four replicates. basal ration was based on ...