Figure 2From: Role of microbial and chemical composition in toxicological properties of indoor and outdoor air particulate matterThe correlation between total PAH concentration (PC2, local combustion related constituents) in the PM 10–2.5 and PM 2.5–0.2 samples and inflammatory (A; TNF-α) and cytotoxicity (B; MTT) responses in mouse macrophages after exposure to three different doses (50, 150 and 300 μg/ml for 24 h) of indoor or outdoor air PM samples. The Pearson correlation coefficients are shown in the figure panel. Seasons are differentiated by colors (blue = winter, green = spring, yellow = summer, red = autumn). X-axis and Y-axis (A) are presented in logarithmic scale and Y-axis (B) in linear scale.Back to article page