Tuesday, 6 November 2012

Peyer’s Patches

  • Peyer’s patches are secondary lympoid tissues. They are MALT (Mucosa Associated Lymphoid Tissue).peyer.6.thn
  • They are collection of lymphoid nodules packed together to form oblong elevations of the mucus membrane of the small intestine.
  • They consist of a mixture of T and B lymphocytes where the T-cells predominate.
  • The cells secrete Ig.A , gets transported across the mucosa into the intestinal lumen where it neutralizes viruses, bacteria and toxins and blocks the entry of these antigens into circulation by acting as an antiseptic paint.

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