GENERAL SCIENCE
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Science Bowl Question

📅 NSB MS 2014🎓 MS🔄 Round 15#️⃣ Question 22🌟 BONUS📝 Multiple Choice

Which of the following is NOT part of humans' innate immune system?

W) Skin
X) Antibodies
Y) Phagocytic cells [fag-uh-SIT-ik]
Z) Mucous membranes
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