Takanashi Motoko, Nasu Tetsuo, Murakami Takayuki, Yasuda Masahiro
Department of Veterinary Anatomy, Faculty of Agriculture, University of Miyazaki, Miyazaki, Japan.
J Vet Med Sci. 2008 Sep;70(9):985-8. doi: 10.1292/jvms.70.985.
The secondary lymphoid tissues appear in sheep ileum after involution of ileal Peyer's patch (PP). However, the existence of the secondary lymphoid tissues before involution of ileal PP has not yet been studied. We examined morphological characteristics of the full length of calf ileal PP using gross and microscopic anatomical techniques. Most areas of ileal PP consisted of densely packed lymphatic follicles contained very few follicular T-cell and associated with only scant interfollicular areas. However, the proximal end of ileal PP consisted of widely dispersed lymphatic follicles contained many follicular T-cell and associated with large interfollicular areas. The histological architectures of the proximal end of ileal PP strongly resembled those of the secondary lymphoid tissue in calf.
回肠派尔集合淋巴结（PP）退化后，次级淋巴组织出现在绵羊回肠中。然而，回肠PP退化前次级淋巴组织的存在情况尚未得到研究。我们使用大体解剖和显微解剖技术检查了小牛回肠PP全长的形态特征。回肠PP的大部分区域由紧密排列的淋巴滤泡组成，滤泡T细胞很少，且仅与稀少的滤泡间区域相关。然而，回肠PP的近端由广泛分散的淋巴滤泡组成，含有许多滤泡T细胞，并与大的滤泡间区域相关。回肠PP近端的组织学结构与小牛次级淋巴组织的结构非常相似。
