the aim of this work was to see whether tamarin immunisation with recombinant vaccinia virus expressing epstein barr virus latent proteins could prime t cells which were, on activation, able to inhibit the outgrowth of epstein barr virus transformed cells in vitro. the vaccination appeared to be successful as all vaccinated tamarins developed vaccinia lesions. however, the vaccination protocol ...

perforin gene (prf1) mutations have been reported in 20-30% of patients with familial hemophagocytic lymphohistiocytosis (fhl), an immune disorder of infancy and early childhood. cytotoxic t and natural killer (nk) cell activities are remarkably reduced or ab-sent in fhl patients. we report the first cases of familial hemophagocytic lymphohistiocy-tosis in an iranian family with two siblings. e...

few studies have been conducted on the causative factors associated with the development of cancer. infection by high risk human papillomaviruses (hpvs) have been implicated as causative agents in a variety of cancers. hpv is capable of evading immune system and establishing persistent infections. prolonged infection and lesion maintenance are associated with higher risk of neoplastic progressi...

conclusions as l. crispatus and l. jensenni were significantly higher in bv infected women and the cytotoxic effect of l. crispatus on tumoral cervical cells was high, introduction of new probiotics seems necessary. results l. crispatus, l. gasseri, l. iners, l. jensenii, l. acidophilus and l. rhamnosus were the most frequently occurring species in vagina of healthy iranian women. l. crispatus ...

patients and methods in this cross-sectional study, peripheral mononuclear cells (pbmcs) were isolated from peripheral blood of 29 patients with newly diagnosed pulmonary tb and 19 patients with positive tuberculin skin test. the pbmcs were activated with ppd for 72 hours. activated cells were harvested, rna was extracted and cdna was synthesized. a real-time taqman method was designed and opti...

Cytotoxic T lymphocytes (CTLs) kill virus-infected cells and tumor cells, and play a critical role in immune protection. Our knowledge of how the CTL killing efficiency varies with CTL and target cell numbers is limited. Here, we simulate a region of lymphoid tissue using a cellular Potts model to characterize the functional response of CTL killing of target cells, and find that the total killi...

conclusions in conclusion, ctp-hbcag18-27-tapasin could reduce apoptosis of cd8+ t cells, increase the percentages of ifn-γ+ cd8α+ t cells, and elicit cell-mediated immunity in hla-a2 transgenic mice; these processes were associated with activation of the pi3k/akt signaling pathway. results the results showed that ctp-hbcag18-27-tapasin significantly increased the percentages of ifn-γ+ cd8α+ t ...

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