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For certain metal arc-welding and other metal processing operations, compounds of barium are used as flux components. Airborne fumes generated by welding with electrodes using barium fluoride or carbonate fluxes may contain 15-30% of barium in readily water-soluble form (Dare et al. 1984). Urine of welders inhaling such fumes was shown to contain elevated(More)
The present paper attempts to set bounds for a qualitative and quantitative evaluation of immune-responses towards cellular mechanisms, as a tool for toxicological studies. It makes a plain distinction between the assessment of skin irritation and skin sensitization evoked by chemical haptens. Three well-known predictive methods to test delayed cutaneous(More)
The radiobiocomplexes labeled with technetium-99m (Tc-99m) have been widely used in nuclear medicine in single photon emission computed tomography and in basic research. The aim of this study was to assess the influence of a Nectandra membranacea extract on the bioavailability of the sodium pertechnetate (Na(99m)TcO(4)) radiobiocomplex in rat organs. The(More)
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