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What Are The 5 Major Barriers Of The Body Defense? [Solved]
Natural barriers include the skin, mucous membranes, tears, earwax, mucus, and stomach acid.
Introduction to Body Defenses and Barrier Defense
Introduction to
Human Defence Systems Against Pathogens | Health | Biology | FuseSchool
Human
GCSE Biology - Immune System (Defences Against Pathogens) #38
In this video we take a look at our
