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Physiology
A patient who underwent extensive bowel resection is on total parenteral nutrition (TPN) for 1 month. Endoscopy done after one month reveals diffuse gastric mucosal atrophy. Which enzyme deficiencies are most likely responsible for gastric mucosal atrophy in this patient?
Gastrin and ghrelin
Secretin and CCK
Gastrin and CCK
Gastrin and secretin
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