A Abhishek Pathak 🎓 Master ⭐ 1.86K Points 📊 Biology Q. An antigen is a substance which (A) Promotes building up of immunity (B) used to protect against poison (C) Reduces body temperature (D) destroys harmful bacteria 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (A) Promotes building up of immunity You must be Logged in to update hint/solution 💬 Discussion 💬 Comment