Peyer's Patch

Vertical section of a portion of a Peyer’s Patch, with lacteal vessels injected. Labels: a, villi, with their lacteals colored black; d, surface of rounded follicle, or solitary gland; e, central part; f,g,h,i, and k, lymph-channels, or lacteal vessels, colored black. “Closely connected with the lymphatic vessels in the intestines are small, rounded bodies of the size of a small pin’s head, called solitary glands or follicles. These bodies consist of a rounded mass of fine lymphoid tissue, the meshes of which are crowded with leucocytes. A Peyer’s patch, or agminated gland, as it is often called, is simply a collection of these follicles."— Kimber, 1907

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