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Human tears contain the enzyme lysozyme which disrupts the cell walls of gram-positive bacteria by digesting the peptidoglycan in it. This enzyme can also be found in your saliva.

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What are five major barriers against pathogens?

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Tears, mucus, mechanical barriers, and the inflammatory response are examples of the body's innate immune system. This system serves as the first line of defense against pathogens, providing immediate responses to infections and injuries. These components work together to prevent the entry of harmful microorganisms and to initiate healing processes when tissues are damaged.


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THere are many barriers to prevent foreign organisms and viruses from entering your body. These include the skin, the mucous membranes of the respiratory system, the stomach acid, the enzymes in your tears, and the immune system.


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