The Epidemiology of poliomgelitis has been investigated in our country Pasteur Institute; the incidence of Poliomgelitis, after the age of 4 years i's rare, in Iran.  Passive antibody of maternal origin do not interfere with production of active antibody after immunization.  Inactivated Polio Vaccine (salk) has been effective in reducing the incidence of poliomge­litis by approximately 90 per ...

The roles of systemic humoral immunity, cell-mediated immunity, and mucosal immunity in reciprocal protective immunity against Bordetella pertussis and Bordetella parapertussis were examined by using a murine model of respiratory infection. Passive immunization with serum from mice infected with B. pertussis established protective immunity against B. pertussis but not against B. parapertussis. ...

micrornas (mirnas) are small preserved non-coding rna molecules that regulate gene expression post-transcriptionally by targeting the 3' utr of mrnas for translational repression or degradation. the rising evidence has established the significant role of mirnas within the regulation of immune system and the prevention of autoimmunity. mir-146a has obtained an importance as a modulator of d...

the effects of methanolic extract and leaf powder of artemisia annua were studied on performance, cellular and humoral immunity in 240 cobb broiler chicks in a completely randomized design. control group did not receive any treatment. the chicks in the second and third groups were fed with feed which contained 2000 and 4000 ppm plant extract in diet and in the groups 4, 5 and 6 chicks received ...

objectives: the aim of the present study was to investigate immunotoxic effect of safranal (saf), a main component of crocus sativus essential oil, using balb/c mice. materials and methods: saf was administered intraperitoneally at doses of 0.1, 0.5 and 1 ml/kg for 3 weeks. hystopathological examination of spleen and bone marrow, cellularity of spleen, delayed type of hypersensitivity (dth) res...

Cancer immunotherapy (passive or active) involves treatments which promote the ability of the immune system to fight tumor cells. Several types of immunotherapeutic agents, such as monoclonal antibodies, immune checkpoint inhibitors, non-specific immunomodulatory agents, and cancer vaccines are currently under intensive investigation in preclinical and clinical trials. Cancer vaccines induce pe...

Passively acquired antibodies through colostrum will protect calves against etiological agents of neonatal calf diarrhea. Among them enteric diseases due to strains of Enterotoxigenic Escherichia coli (ETEC) are the most commonly occurring form of colibacillosis in newborn calves. Specific antibodies against whole ETEC cells and total immunoglobulin G in dam serum, colostrum and calf serum were...

(From the Rockefeller Institute !or Medical Research, New York.) The immunity which human beings develop towards vaccinia, after a successful vaccination, is the classical example of an artificially induced active immunity. The duration of the immunity to vaccinia is variable but extends frequently over many years. Many animals are subject to inoculation with vaccinia and they show, as in the c...

RSV infections are a major burden in infants less than 3 months of age. Newborns and infants express a distinct immune system that is largely dependent on innate immunity and passive immunity from maternal antibodies. Antibodies can regulate immune responses against viruses through interaction with Fc gamma receptors leading to enhancement or neutralization of viral infections. The mechanisms u...

Immunity assays on sheep sera using passive mouse protection tests showed that vaccines containing more than 4 strains of Pasteurella multocida did not give a good immunity. The immune response was not enhanced by the use of an oil adjuvant, and high concentrations of bacteria had only a partial positive effect. Attempts to extract selectively the protection-inducing antigen(s) from P. multocid...