Nucleocapsid (N) protein of infectious bronchitis virus (IBV), one of the viral structural proteins, inducesstrong antibody response in natural infection. In this study, a simple, recombinant N protein-based dot-blottest was developed to serologically examine chicken serum samples for the presence of IBV antibody.Initially, 72 serum samples were tested for the presence of IBV antibody using a c...

Background: Hydatid disease is characterized by long-term growth of hydatid cysts in the human. The glycan antigens have an important role in the immunology of hydatid cyst. In this study immunological reaction of host sera to different glycan antigens of the cyst, has been investigated. Methods: The antibody responses were tested to glycoprotein and glycolipid of the laminated layer (LL), c...

to evaluate the effect of supplemental vitamin c (vc) levels on performance and immune response of broiler chicks, 300 day-old ross male broiler chicks were allocated to a completly randomized design of 5 treatments(500 and 1000 ppm in diet, 500 and 1000 ppm in drinking water and control). immunity was assessed as antibody production against infectious bronchitis virus (ibv) and newcastle disea...

In the primary response of mice and rabbits immunized with foreign red cells, 6-MP administration prolonged the formation of 19S antibody. 7S antibody formation was delayed and reduced in these animals. Animals treated with 6-MP during primary response exhibited a preferential 19S response when challenged in the anamnestic response. Animals immunized with small doses of antigen and treated with...

background: apart from genetic and environmental factors, activation of autoreactive mechanisms has been proposed to play a role in the pathogenesis of schizophrenia. in re-cent years, considerable work has been carried out to understand the role and contribution of the immune system in this disease. objective: to investigate the t cell response to phytohaemagglutinin (pha) and determine the se...

objective(s): in this study, for the first time, mf59 adjuvant was used to develop a cholesteryl ester transfer protein (cetp) vaccine. the efficacy of the vaccine was compared with the efficacy of cetp vaccine formulated with alum/cpg, the formulation that its immunogenicity has been already demonstrated in rabbit and mice. materials and methods: tetanus toxoid- cetp peptide (tt-cetp) was mixe...

Abstract Background In this study, the prevalence and persistence of anti-SARS-CoV-2 (severe acute respiratory syndrome-coronavirus) IgG was evaluated in volunteers 90 days after COVID-19 (coronavirus disease 2019) diagnosis by correlating response dynamics with clinical conditions, epidemiological characteristics, severity. Methods The study recruited 200 aged 18 years or older both sexes diag...

The objective of this study was to evaluate the effects of cottonseed meal (CSM) treated with sodium bentonite (SB) on certain blood components and immune response of laying hens. A 3 × 3 factorial arrangement with 3 levels of SB (0, 10, and 20 g/kg of diet) and 3 levels of CSM (0, 100 and 200 g/kg of diet) were used within 9 dietary treatments of 4 replicates each. Nine mash diets were fed to ...

Immune infertility, in terms of reproductive failure, has become a serious health issue involving approximately 1 out of 5 couples at reproductive age. Semen that is defined as a complex fluid containing sperm, cellular vesicles and other cells and components, could sensitize the female genital tract. The immune rejection of male semen in the female reproductive tract is explained as the failur...

Purified streptococcal M protein extracted by nonionic detergent was used in an RIA and a solid-phase radiocompetitive inhibition assay to determine the nature of the immune response in both human beings and hyperimmunized rabbits to this complex antiphagocytic antigen. Results indicate that a type-specific response to an M antigen with the development of opsonic antibodies is the result of ant...