A granulocyte is a type of cell, so the correct category is:
✅ Cellular defense
Explanation:
Granulocytes are white blood cells that help fight infection. They are part of the innate immune system and include:
- Neutrophils – attack bacteria
- Eosinophils – fight parasites
- Basophils – involved in allergic reactions
Since they are actual cells that act in defense, they fall under cellular rather than physical (like skin) or chemical (like stomach acid or lysozyme) barriers.
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