Barrier Function:The ability of epithelial tissues to form a physical and chemical barrier that prevents the entry of harmful substances, pathogens, and environmental stressors into the body.
Immune Response: The coordinated effort of the immune system to recognize, respond to, and eliminate foreign or potentially harmful substances, such as pathogens, toxins, or damaged cells.
Regeneration:The process by which damaged or lost tissues are replaced or restored, allowing the body to recover and maintain its structural and functional integrity.