Which organ's mucosa-associated lymphoid tissue includes organized lymphoid tissue in the ileum?

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Multiple Choice

Which organ's mucosa-associated lymphoid tissue includes organized lymphoid tissue in the ileum?

Peyer's patches are organized lymphoid tissue located in the ileal mucosa and submucosa, forming discrete lymphoid follicles with germinal centers and separate B and T cell zones. They are a defining component of gut-associated lymphoid tissue (GALT) and are specialized for sampling luminal antigens via M cells in the overlying epithelium, helping initiate mucosal IgA responses. This organized lymphoid tissue specifically in the ileum distinguishes Peyer's patches from other mucosal lymphoid tissues, such as those in the lungs (BALT), and from the spleen or lymph nodes, which are not mucosa-associated structures in the intestinal lining. Therefore, the organ with organized mucosa-associated lymphoid tissue in the ileum is Peyer's patches.

Peyer's patches are organized lymphoid tissue located in the ileal mucosa and submucosa, forming discrete lymphoid follicles with germinal centers and separate B and T cell zones. They are a defining component of gut-associated lymphoid tissue (GALT) and are specialized for sampling luminal antigens via M cells in the overlying epithelium, helping initiate mucosal IgA responses. This organized lymphoid tissue specifically in the ileum distinguishes Peyer's patches from other mucosal lymphoid tissues, such as those in the lungs (BALT), and from the spleen or lymph nodes, which are not mucosa-associated structures in the intestinal lining. Therefore, the organ with organized mucosa-associated lymphoid tissue in the ileum is Peyer's patches.

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