[Morphological features of lymphoid structures in the walls of the duodenum in adults].

Morphological characteristics of lymphoid structures in the walls of duodenum in adults are presented including the data on the thickness of layers of duodenal wall at different regions, the dimensions of lymphatic nodules and the depth they lie at and the arrangement of diffuse lymphoid tissue. These findings may help to approach the understanding of mechanisms of immune processes in people of different age.