title: [Effects of Atrovent on bronchial hyperresponsiveness and pulmonary muscarinic acetylcholine receptors].
mesh_terms: D000818:Animals; D001286:Atropine Derivatives / Q000494:pharmacology*; D001980:Bronchi / Q000187:drug effects*; D006168:Guinea Pigs; D009241:Ipratropium / Q000494:pharmacology*; D008168:Lung / Q000032:analysis; D008297:Male; D010100:Oxygen / Q000097:blood; D010313:Partial Pressure; D011976:Receptors, Muscarinic / Q000032:analysis / Q000187:drug effects*
chemical_list: D001286:Atropine Derivatives; D011976:Receptors, Muscarinic; D009241:Ipratropium; D010100:Oxygen