Mucosal protection is a research area focused on studying the protective mechanisms that prevent damage to mucosal surfaces in the body. Mucosal surfaces, such as the lining of the gastrointestinal tract, respiratory tract, and reproductive tract, are constantly exposed to potentially harmful pathogens, toxins, and other environmental factors. Understanding how these surfaces are protected and maintained is important for developing strategies to prevent and treat diseases that affect mucosal tissues, such as inflammatory bowel disease, asthma, and sexually transmitted infections. Researchers in this field study the complex interactions between the mucosal surfaces, the immune system, and the microbiome to identify potential targets for therapeutic interventions.