Ultrastructure of Peyer's patches in the domestic fowl and turkey
Burns, R.B.; Maxwell, M.H.
Journal of Anatomy 147: 235-243
1986
ISSN/ISBN: 0021-8782 PMID: 3693074 Document Number: 281265
Peyer's patches in the fowl and turkey were indistinguishable at the ultrastructural level and were similar in many respects to those found in mammals. They were overlaid by a lymphoepithelium containing undifferentiated intestinal epithelial cells with a well developed microvillous border, follicle associated epithelial (FAE) or M cells with short blunt microvilli, lymphocytes and plasma cells. FAE celle had a lightly stained cytoplasm with vacuoles and vesicles. They were similar to mammalian FAE cells. The lymphoid aggregates of Peyer's patches consisted of small and large lymphocytes, lymphoblasts and plasma cells. Macrophages and globule leukocytes were seen among the lymphoid cells.