Fig. 2From: Influence of wood species on toxicity of log-wood stove combustion aerosols: a parallel animal and air-liquid interface cell exposure study on spruce and pine smokePhysical properties of the diluted exposure exhaust for spruce a-b and pine c-d experiments. Parts A and C show the average over 3 experimental days of total suspended particulate mass (TSP; TEOM), lung deposited surface area (LDSA; NSAM) and particle number concentration (PNC, ELPI) during exposures, with Tox-ALI exposure times indicated with grey areas. Grey lines denote batch starting times, whereas size distribution during each exposure is shown in parts B and DBack to article page