The use of expired air to measure intestinal gas formation.
D000328:Adult; D001007:Anxiety; D002245:Carbon Dioxide / Q000378:metabolism; D004032:Diet; D004644:Emotions; D005414:Flatulence / Q000378:metabolism; D006801:Humans; D006859:Hydrogen / Q000378:metabolism*; D007413:Intestinal Mucosa / Q000378:metabolism*; D008697:Methane / Q000378:metabolism*; D009844:Oligosaccharides / Q000378:metabolism; D012119:Respiration
D009844:Oligosaccharides; D002245:Carbon Dioxide; D006859:Hydrogen; D008697:Methane