Milk drinking and possible protection of the respiratory epithelium.
D000328:Adult; D000818:Animals; D001991:Bronchitis / Q000453:epidemiology* / Q000517:prevention & control; D002417:Cattle; D002908:Chronic Disease; D004326:Drinking; D004848:Epithelium / Q000502:physiology; D006801:Humans; D008892:Milk; D009747:Nutritional Physiological Phenomena; D012143:Respiratory Physiological Phenomena; D012907:Smoking; D014801:Vitamin A
D014801:Vitamin A