At high concentrations, it can cause significant acute disease with pulmonary edema, whereas chronic exposures at lower concentrations can lead to significant pulmonary fibrosis.
高浓度中，它可导致显著的急性肺水肿，相反慢性暴露在低浓度中可以导致显著的肺纤维化。
2
Hyperemia and edema disappear 4 days later, chronic inflammatory cell may exist.
第4天充血水肿消退，可有慢性炎性细胞浸润。
3
The suppression to the granuloma induced by croton oil and paw edema of adjuvant-induced polyarthritis in rats were utilized to verify the inhibition to the chronic inflammation.