Antimicrobial proteins are specialized proteins that help defend the body against harmful microorganisms like bacteria, viruses, and fungi. They work by disrupting the cell membranes of these pathogens or interfering with their ability to reproduce. These proteins are an essential part of the immune system, providing a first line of defense in protecting the body from infections. Examples of antimicrobial proteins include defensins and cathelicidins, which are produced by various cells in the body, including white blood cells and epithelial cells. These proteins can be found in various body fluids, such as saliva and sweat, contributing to overall health by preventing infections and promoting healing.