“…A number of reports describe the effects upon proteins of ultrasound (1300,2099,2459), heat (936, 937, 997, factor in gastric juice is reduced or absent in pernicious anemia (974,2282,2389). Carbohydrates in gastric juice (764) include the blood-group-specific substances (763). Gastric mucus contains proteases, carboxylesterases, acid phosphatases, and several other protein fractions (1821).…”