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Histological markers in the brains of adult female B6C3F1 mice following oropharyngeal aspiration exposure to CBN 3 geogenic dust samples. Data are presented as mean ± standard error of mean. Sample size for each group was 5–6 animals. The (*) indicates a response statistically different from the 0 mg/kg group (p< 0.05). (A) CD3+ T cells; (B) myelin basic protein (MBP).
