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Intracellular HSP70 content in the lymphoid tissue of animals submitted to subacute nasotropic instillation of residual oil fly ash (ROFA). Intracellular HSP70 (iHSP70) content in a lymph nodes, b thymus, and c spleen with the respective representative immunoblots. C control, R ROFA. Values are presented as mean ± SD, n = 10–12 rats per group. Statistical analysis was performed by Student’s t test. *P < 0.05
