title: Pulmonary effects of exposure to 20 ppm NO2.
mesh_terms: D000818:Animals; D003094:Collagen / Q000032:analysis; D005260:Female; D008168:Lung / Q000032:analysis / Q000187:drug effects* / Q000473:pathology; D008297:Male; D009573:Nitrites / Q000009:adverse effects*; D051381:Rats; D013997:Time Factors
chemical_list: D009573:Nitrites; D003094:Collagen