Early ventilation-perfusion changes in asthma.
D000293:Adolescent; D000328:Adult; D001249:Asthma / Q000209:etiology / Q000503:physiopathology*; D001784:Blood Gas Analysis; D002648:Child; D006801:Humans; D008688:Methacholine Compounds / Q000494:pharmacology; D008875:Middle Aged; D005082:Physical Exertion; D011058:Pollen / Q000494:pharmacology; D013997:Time Factors; D014692:Ventilation-Perfusion Ratio
D008688:Methacholine Compounds