background and aims: adventitious agents, especially viral agents are among the most important concerns in viral vaccines. viral contamination of biological products may arise from the original source of the reagents such as, serum, trypsin, animal or human derived media components or cell culture and working seed or cross contamination of vaccine during production. in this study, adventitious ...

background: bleeding events in hemophilic patients with inhibitors are managed by bypassing agents. currently available agents in iran are recombinant activated factor vii (rfviia; aryogen, aryoseven) and feiba (factor eight inhibitor bypassing agent). no standardized and accurate assay is currently available for monitoring the effectiveness of bypassing agents. we suggested that history of the...

hiv infection by maternal transmission is increasing in the world due to the increase in infected women who are not receiving appropriate antiretroviral therapy. prognosis of hiv infection in children is poor because the newborn has an immature immune system. early diagnosis and therapy are needed to avoid the development of aids. new therapies are becoming available but prevention of infection...

introduction: the purpose of a desensitizing agent is a permanent coating or filling of dentin surface. morphological analysis in vitro of this treated surface is essential to understand the interaction between desensitizing agent and hypersensitive dentin. the aim was to evaluate the morphology of four dentin surface treated with desensitizing agents. methods: this was an in vitro laboratory s...

We 1 present a method for controlling autonomous agents in un-predictible environments. For this, the agent's architecture of Hayes-Roth et al. (1995) is extended regarding spontaneous goal generation and goal selection. This method seems psychologically plausible under the term motivation. In addition, its implementation exhibits attractive real-time characteristics, relating environment, agen...

Spontaneous histamine release from isolarted Mastcells was found to be independent of cal­cium in the concentration range up to 1 m. mole/lit. Phosphatidyl serine do not change the effect of calcium on spontaneous release. The activation of anaphyla.ctic histamine release by calcium is potentiated by phosphatidyl serine but the laitter can't do so w1th strontium.  Mastcells, pretreated with AT...