Peyer’s patch in the ileum of the dog, cut “en face”
![](https://sites.tufts.edu/vetimages/files/2021/07/Peyer_s_patch_int_the_ileum_of_the_dog_cut_en_face-20408.jpg)
System: Lymphoid, Organ: Ileum, Tissue: Peyer’s patch, Species: Dog. Comments: Peyer’s patch cut “en face”. As the cut slants deeper into the tissue, the crypts disappear and only lymphoid tissue remains (lower left).