Biology · Human Immune System
When a foreign substance enters the human blood circulatory system, which component initiates the immune response?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Platelets
- 2Plasma
- 3White Blood Cells (WBC)✓
- 4Red Blood Cells (RBC)
Correct answer
White Blood Cells (WBC)
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