Structural features of esophageal tonsil in chickens of age 1, 2 and 3 years
It is established, that in chickens of age 1, 2 and 3 years the esophageal tonsil are morphofunctionally matured and represented by diffuse lymphoid tissue, prenodules, primary and secondary lymphoid nodules. The greatest of area lymphoid tissue is registered in esophageal tonsil of chickens at the age of 2 years. At chickens of advanced age it decreases a little. The sizes of lymphoid nodules are decreasing also.