Atlas One · Host Biology · Scale 05 — Tissue

Peyer's Patches

Unencapsulated lymphoid nodules in ileal submucosa; primary inductive site of gut mucosal immunity. M cells in follicle-associated epithelium sample luminal antigens; germinal centers produce IgA-committed B cells that migrate to lamina propria for secretory IgA synthesis.

Also known as: Peyer patches, ileal lymphoid nodules, GALT, gut-associated lymphoid tissue

Scale 05 — TissueScale
draftStatus
2026-06-06Last Reviewed
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peyers-patches

Peyer's Patches

Unencapsulated lymphoid nodules in ileal submucosa; primary inductive site of gut mucosal immunity. M cells in follicle-associated epithelium sample luminal antigens; germinal centers produce IgA-committed B cells that migrate to lamina propria for secretory IgA synthesis.