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Lung responses after inhalation to a thermal spray coating aerosol: (A) BAL LDH; (B) Total BAL cells; (C) BAL AMs; (D) BAL PMNs. Male Sprague-Dawley rats (n = 5–6/group) were exposed to the respirable portion of 25 mg/m3 of electric arc thermal spray aerosol using a PMET720 wire at 60 psi, 30 V, and 200A. The actual measured mean chamber concentration after a 9-d animal exposure (4 h/d) was to be 24.9 mg/m3+ 2.1 standard error; *, Significantly different from air control (p < 0.05).
