Third Line of Defence & Types of Immunity | Monocytes, T & B Cells | FSC Part 2 Ch 21 (2026) Biology

🧬 Third Line of Defence | Types of Immunity & Components of the Immune System | Lecture 4 Welcome to DNA Decode with IJAZ! In this lecture, we will explore the Third Line of Defence of the immune system, an important topic from FSC Part 2 Biology, Chapter 21 – Immunity (New Book 2026). 📚 Topics Covered in This Lecture: 1. Introduction to the Third Line of Defence 2. Types of Immunity: Innate Immunity (Non-Specific) Acquired Immunity (Specific) Active Immunity Passive Immunity Natural and Artificial Immunity 3. Components of the Immune System 4. Monocytes and Macrophages 5. T-Cells and their Major Types: Helper T-Cells Cytotoxic T-Cells Inducer T-Cells Suppressor T-Cells 6. B-Cells and Plasma Cells 7. Functions of Immune Cells ⏱️ VIDEO TIMESTAMPS: 00:00 – Introduction to Third Line of Defence 00:55 – Types of Immunity 02:00 – Active and Passive Immunity 03:10 – Components of the Immune System 04:00 – Monocytes and Macrophages 05:15 – T-Cells and Their Types 06:50 – B-Cells and Plasma Cells 08:35 – Important Functions and Quick Revision 🎯 Who Should Watch? FSC Part 2 Biology Students Class 12 New Book 2026 Students MDCAT Aspirants Students preparing for Biology Board Examinations 💡 Why Watch This Lecture? Understand complex biological concepts through easy explanations, clear diagrams and exam-focused notes. 📌 Don't forget to: 👍 Like this video 💬 Comment your questions 🔔 Subscribe to DNA Decode with IJAZ 📤 Share this lecture with your classmates and friends. 📺 Subscribe to our YouTube Channel: DNA Decode with IJAZ Learn Biology with Concepts, Clarity and Confidence! #ThirdLineOfDefence #TypesOfImmunity #Chapter21Immunity #FSCPart2Biology #NewBook2026 #Monocytes #TCells #BCells #MDCATPreparation #DNAdecodewithIJAZ