Figure 9

Dose dependent particle entering. At rising exposure concentrations, the number of intracellular particles increased for both particle sizes. The increase in the number of 1 μm was steeper than that of 0.05 μm particles. Note the logarithmic scale of the x and y axis. Black circle = 1 μm particles. Black triangle = 0.05 μm particles. Black horizontal line = mean values of three experiments at each concentration. The trend lines are based on the means.