Skin - Prevents pathogens from entering your body, Nose Hair - Traps pathogens in air when breathing in, Stomach Acid - Kills pathogens in food you eat, Cilia cells (Cells in your throat) - Sweeps pathogens and traps them in mucus to cough out, Tear Drops - Releases special enzymes to kill pathogens to protect your eyes,

Physical Barriers to Pathogens

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