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The pulmonary toxicity induced by sub-acute inhalation of the SM in rats. (A) Total cell count in bronchoalveolar lavage fluid (BALF), (B) total protein (TP) content in BALF, and (C) lactate dehydrogenase (LDH) activity in BALF. Male rats inhaled aerosolic SM for 2 weeks. The values are reported as the mean ± SE.
