1. evolution of fiber length within narrow Conclusions
2. ranges of fiber diameters could provide Use of the inhalation model for deter
3. additional precision in differentiating mining the biopersistence of fibers in rats
4. fibers that are breaking or dissolving. provides a precise method for routinely Chemical Composition. The change evaluating the potential for fibers to
5. in chemical composition of the fibers remain intact in the distal airways and