Apart from the TRL9 activation, IC31 can provide prolonged antigen exposition periods through the complexation of its two components, forming a depot [ 190].
Prior the mutagenesis experiments, a dose/response assay was performed to determine the optimal UV-exposition period required to obtain the highest accumulation of DNA mutations of L. starkeyi cells, as indicated by lower survival rates (Kava-Cordeiro et al.1995).1995
Dust deposition density increases as the time period of exposition increases.
We expected that the shorter menstrual bleeding might increase the risk of urogenital infections because is synonymous with the shorter period of exposition on bactericidal action of hemocidins.
Figure 1 L. starkeyi survival after UV exposure, according to the number of colony forming units (CFU) observed in each time period of exposition.
In addition, children exposed to prenatal smoking are more likely to be exposed to postnatal passive smoking [ 8], but few studies account for this period of exposition.
Moreover, these chips show high resistance to air contamination and can absorb and release hydrogen even after long periods of exposition to air.
They found an impairment of glucose tolerance in all periods of exposition in male offspring at the age of 3 months, phenomenon that persisted to 8 months in those males that have been exposed to BPA during the fetal period.
In our cultured neurons, intracellular signaling pathways were successfully activated during shorter periods of exposition (<2 hours) in the presence of HEK293 cell supernatants containing soluble Cntns (unpublished data).
