Evaluation of clinical methods in gastrointestinal diseases.  VII.  Tubeless detection of gastric acidity using an azure A ion-exchange indicator.
D001399:Azure Stains; D004063:Digestion; D005750:Gastric Juice; D005767:Gastrointestinal Diseases / Q000175:diagnosis*; D007474:Ion Exchange; D007475:Ion Exchange Resins
D001399:Azure Stains; D007475:Ion Exchange Resins; C025818:Azure A
GASTRIC JUICE; GASTROINTESTINAL DISEASES/diagnosis; ION EXCHANGE RESINS