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Relative change (at 72 hr) from air control rat bacterial levels in lungs of rats that had been exposed 5 hr/d for 5 days to soluble or insoluble forms of V or Cr prior to infection. Each bar represents mean (± SE) of 10 rats/subset. At p < 0.05: *percent (%) change from air control levels was significant; ‡% change significantly differs from opposing solubility counterpart (within metal set); #% change significantly differs from solubility-matched V counterpart.
