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In which country does the highest percentage of the world's smokers live?
Pepsinogen
A precursor enzyme secreted by the stomach, which is converted into pepsin for protein digestion.
Chief Cell
Specialized cells found in the lining of the stomach and parathyroid glands that produce and secrete digestive enzymes or parathyroid hormone.
Duodenal Cell
A duodenal cell is a type of cell found in the duodenum, the first segment of the small intestine, involved in digestive processes.
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