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A Stratified Sample Is Sometimes Recommended When

question 105

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A stratified sample is sometimes recommended when:


Definitions:

Duodenal Gland

Small gland that opens into the base of intestinal glands; secretes a mucoid alkaline substance.

Duodenal Mucosa

The lining of the duodenum, which contains cells responsible for the secretion of enzymes necessary for digestion.

Acidic Chyme

The partially digested, acidic food that passes from the stomach to the small intestine.

Parietal Cells

Cells in the stomach lining that secrete hydrochloric acid and intrinsic factor, essential for digestion and B12 absorption respectively.

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