Physical Barriers in First-Line Defenses: Mucous Membrane Video Tutorial & Practice | Channels for Pearson+
![What is First Line of defence in immune system? Physical, Chemical & Biological barriers involved. - YouTube What is First Line of defence in immune system? Physical, Chemical & Biological barriers involved. - YouTube](https://i.ytimg.com/vi/5lrAehqruco/maxresdefault.jpg)
What is First Line of defence in immune system? Physical, Chemical & Biological barriers involved. - YouTube
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First line of defense (non-specific barriers) : physical and chemical barriers that prevent pathogens from entering (skin, mucus, acids in the stomach, - ppt download
![Eddy | SPM iTutor 🤖 🇲🇾 on Twitter: "The body's 1st line of defence against infection consists of physical and chemical barriers ⚔️🛡️ Quick head to toe breakdown ⤵️ #KSSM #SPM #Biology # Eddy | SPM iTutor 🤖 🇲🇾 on Twitter: "The body's 1st line of defence against infection consists of physical and chemical barriers ⚔️🛡️ Quick head to toe breakdown ⤵️ #KSSM #SPM #Biology #](https://pbs.twimg.com/media/E1qfiz-XIAMIjuL.jpg)
Eddy | SPM iTutor 🤖 🇲🇾 on Twitter: "The body's 1st line of defence against infection consists of physical and chemical barriers ⚔️🛡️ Quick head to toe breakdown ⤵️ #KSSM #SPM #Biology #
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