Fig. 2From: Pulmonary challenge with carbon nanoparticles induces a dose-dependent increase in circulating leukocytes in healthy malesPeripheral blood neutrophils before (black bars) and 6 h after (green bars) bronchial segmental challenge with placebo, 10 μg, 50 μg, or 100 μg carbon nanoparticles (NP). Values are expressed as mean ± 1 Standard ErrorBack to article page