The skin contains dead cells that digest protein keratin protection skin contains dead cells containing keratin protein indigestible production. By reducing skin pH inhibits the growth of disease Lysozymes salvia, sweat and tears have anti-bacterial enzymes , bacteria are ingested and destroyed by stomach acid (HCl) Exposure sticky mucus in respiratory diseases trap Cillia. Keep moving mucus toward the throat gas exchange surface to protect the immune system and foreign material.
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