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. Author manuscript; available in PMC: 2016 Aug 4.

Published in final edited form as: Inhal Toxicol. 2012 Nov 15;24(14):931–938. doi: 10.3109/08958378.2012.731436

Table 3.

Slopes for the lung parameters displayed by age and exposure

	Slopes (mean ± SEM)
		11 weeks	39 weeks	67 weeks	96 weeks
R_aw/lnMch	Room Air	0.602±0.092^*	0.392±0.168^*	0.285±0.130^*^{^}	0.192 ± 0.130^{^}
R_aw/lnMch	Carbon Black	0.539±0.092^*	0.619±0.145^*	0.641±0.118^*^#	0.243±0.118^*^{^}
H/lnMch	Room Air	15.499±1.993^*	7.755±3.638^*^{^}	5.019±2.818^{^}	1.606±2.818^{^}
H/lnMch	Carbon Black	14.789±1.993^*	7.502±3.151^*	9.125±2.573^*	2.617±2.573^{^}
G/lnMch	Room Air	6.002±0.801^*	1.920±1.462^{^}	1.843±1.133^{^}	1.206±1.133^{^}
G/lnMch	Carbon Black	4.017±0.801^*	3.547±1.266^*	5.663±1.034^*^#	0.943±1.034^{^}
R/lnMch	Room Air	1.378±0.138^*	0.581±0.252^*^{^}	0.524±0.195^*^{^}	0.268±0.195^{^}
R/lnMch	Carbon Black	0.934±0.138^*^#	0.854±0.218^*	0.870±0.178^*	0.283±0.178^{^}
E/lnMch	Room Air	17.848±2.959^*	13.310±5.402^*	5.884±4.184^{^}	4.369±4.184^{^}
E/lnMch	Carbon Black	19.773±2.959^*	13.547±4.678^*	18.138±3.820^*^#	7.134±3.820^{^}

^*

Slope significantly different from 0 (p < 0.05)

^{^}

Significant difference from 11 weeks within exposure (p < 0.05)

^#

Significant difference for CB compared to RA within age (p < 0.05)