Table 2.

BAL cell differential after exposure to PMET731, PMET885, and PMET540 thermal spray coating aerosols.

Treatment Groups	Time (Days Post-Exposure)	BAL Alveolar Macrophages (106)	BAL Neutrophils (106)	BAL Eosinophils (106)
Air PMET731	Day 4	4.87±0.41	0.008±0.008	0.00±0.00
		5.68±0.27	0.46±0.12	0.00±0.00
Air PMET731	Day 30	4.38±0.20	0.008+0.005	0.00±0.00
		5.07±0.53	0.38±0.12	0.00±0.00
Air PMET885	Day 4	4.68±0.52	0.020±0.001	0.03±0.02
		12.7±1.9*	4.15±0.43*	2.29±0.74*
Air PMET885	Day 30	4.42±0.28	0.128±0.12	0.00±0.00
		91.1±8.3*	18.5±3.8*	3.07±1.06*
Air PMET540	Day 4	4.61±0.17	0.005±0.005	0.00±0.00
		7.81+0.60*	0.33±0.08	0.010+0.01
Air PMET540	Day 30	5.36±0.50	0.008±0.003	0.00±0.00
		6.19 ±0.46	0.030±0.010	0.020±0.02

Note. Male Sprague-Dawley rats (n=6/treatment group within a time point) were exposed to a target concentration of 25mg/m³ × 4hr/d × 4 d. For BAL cell differential analysis, 200 cells/rat were counted.

^*Significantly different from corresponding air control within a time point (p<0.05).