Antimicrobial secretions are produced by a variety of epithelial tissues throughout the body. For instance, the skin secretes antimicrobial peptides that are crucial for maintaining its barrier function. Similarly, the respiratory epithelium secretes mucus containing lysozyme and defensins to trap and neutralize inhaled pathogens. The gastrointestinal tract also secretes a range of antimicrobial enzymes to prevent microbial overgrowth.
