Step 1: Understanding Kupffer cells.
- Kupffer cells are specialized macrophages found in the liver.
- They are part of the mononuclear phagocyte system (MPS) and play a crucial role in immune defense by removing pathogens, dead cells, and toxins from the blood.
Step 2: Explanation of incorrect options.
- Small intestine (A): Contains Peyer’s patches, but not Kupffer cells.
- Stomach (C): Primarily has gastric glands, not macrophages.
- Large intestine (D): Involved in absorption and houses gut microbiota, but does not contain Kupffer cells.
Step 3: Selecting the correct option.
Since Kupffer cells are liver-resident macrophages, the correct answer is (B) Liver.
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