Intestinal Immune System

Overview

The intestinal immune system is the specialized network of immune cells, tissues, and molecules within the gut that defends the body against ingested pathogens while tolerating harmless food antigens and the vast community of resident microbes. It is the largest component of the immune system, organized into structures such as Peyer's patches, the lamina propria, and the epithelial barrier, and populated by lymphocytes, dendritic cells, macrophages, and antibody-secreting plasma cells that produce protective secretory immunoglobulin A. This system continuously balances active defense against invading microorganisms with regulatory tolerance to the gut microbiota and dietary components, a balance whose disruption is implicated in infection, inflammatory bowel disease, allergy, and other immune-mediated disorders. Within the study of Human and Animal Intestines, the intestinal immune system is central to understanding how the gut maintains health and how its dysregulation drives disease. Related research on allergic pathology and on disorders such as small intestinal bacterial overgrowth reflects the broader interplay between intestinal function, the microbial environment, and immune responses. This page reflects the scope of intestinal research in examining gut structure, microbiota, and immunity, and gathers peer-reviewed, open-access material relevant to the intestinal immune system and mucosal defense.

Research published in this journal

3 peer-reviewed articles, ranked by relevance. Each links to its DOI.

This page summarises published research for orientation; it is not medical or professional advice.

Related topics