1st LINE OF DEFENCE | CHAPTER 9 | IMMUNITY |CLASS 12 |BIOLOGY |NBF 2025 |NEW BOOK FEDERAL BOARD 2025
Автор: Seven star academy
Загружено: 2025-11-17
Просмотров: 965
Описание:
Immunity is the body’s built-in defense mechanism that protects us from disease-causing microorganisms and harmful substances. In this video, we take a deep dive into how the immune system works—from the first line of defense provided by innate immunity to the highly specialized responses of adaptive immunity. You’ll learn how white blood cells identify and destroy pathogens, how antibodies are formed, and how the body develops memory to fight infections faster in the future. We also explore natural and artificial immunity, vaccines, and factors that strengthen or weaken immune responses. This video is perfect for biology students, medical learners, and anyone interested in understanding how the human body stays protected and maintains health.
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