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BAL cell differential. Total cells (A), AMs (B), PMNs (C), lymphocytes (D), and eosinophils (E). The rats were exposed for 1, 4, 8, 15, and 30 days to air or ABS emissions (240 μg/m3) and euthanized at 24 h post last exposure. Values represents means ± SEMs; N = 8/group/time point. *Significantly different from corresponding air control, p < 0.05.
