This lecture covers Unit 3: Defence Mechanism and Hypersensitivity from the subject Microbiology. Tailored for BS Nursing 1st Semester students in the Swat Region, this video explains how the body protects itself against infections and the types of hypersensitivity reactions. 📚 Subject: Microbiology 🎓 Topic: Unit 3 – Defence Mechanism & Hypersensitivity 🧑⚕️ Semester: BS Nursing 1st Semester 📍 Audience: Swat Region Nursing Students 📺 Channel: Conceptual Nursing Academy ✅ Don’t forget to Like, Comment & Subscribe 🔔 Turn on the bell icon for more helpful lectures 🛡️ Copyright Description: ⚠️ This content is solely for educational purposes under fair use. All materials used belong to their respective copyright holders. No part of this video may be copied or reused without permission. © Conceptual Nursing Academy