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首页> 外文期刊>Journal of Fish Biology >Ontogeny of American paddlefish lymphoid tissues
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Ontogeny of American paddlefish lymphoid tissues

机译：美国pad鱼淋巴组织的个体发育

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The temporal and spatial distribution of American paddlefish Polyodon spathula immune cell populations was determined using enzyme cytochemistry and immunohistochemistry. Monocytes and macrophages were present in the renal haematopoietic tissue, spleen, meningeal myeloid tissue, cardiac myeloid tissue and lamina propria of the spiral valve at 7 days post-hatch (dph). Immature lymphocytes were present in the renal haematopoietic tissue, spleen, meningeal myeloid tissue, cardiac myeloid tissue, thymus and lamina propria of the spiral valve at 7 dph. Type A lymphocytes (T-cell like) were demonstrated in the thymus by 21 dph. Type B immunoglobulin positive lymphocytes (B-cell like) were present in the renal haematopoietic tissue, cardiac myeloid tissue and lamina propria of the spiral valve by 7 dph, the thymus at 21 dph, the spleen by 56 dph, and were not observed in the meningeal myeloid tissue of paddlefish aged 7-28 dph. Granulocytes were present in the renal haematopoietic tissue, thymus, spleen, meningeal myeloid tissue, cardiac myeloid tissue and lamina propria of the spiral valve by 7 dph. The spleens in 7-28 dph fish were predominately red pulp. Differentiation of leukocytic and erythrocytic compartments (white and red pulp, respectively) was not apparent in the spleen until 56 dph. Remarkable thymic cortical and medullary differentiation was not yet present at 28 dph, and the thymus was not sampled at 56, 84 or 112 dph. The cardiac myeloid tissue was not developed until 56 dph. Peyer's patches were present in the lamina propria by 56 dph. Paddlefish lympho-myeloid structures are therefore slow to develop, and vaccination procedures should be performed at 2-4 months post-hatch.
机译：使用酶细胞化学和免疫组织化学方法确定了美人鱼多角形目棘的免疫细胞群的时空分布。孵化后第7天（dph），单核细胞和巨噬细胞存在于肾造血组织，脾脏，脑膜髓样组织，心脏髓样组织和螺旋瓣的固有层中。肾造血组织，脾脏，脑膜髓样组织，心脏髓样组织，胸腺和螺旋瓣固有层在7 dph时存在未成熟的淋巴细胞。在胸腺中以21 dph的速度显示出A型淋巴细胞（类似T细胞）。 B型免疫球蛋白阳性淋巴细胞（B细胞样）存在于肾造血组织，心脏髓样组织和螺旋阀的固有层中，分别为7 dph，21 dph的胸腺，56 dph的脾脏，在7-28 dph年龄的河豚的脑膜髓样组织。肾造血组织，胸腺，脾脏，脑膜髓样组织，心脏髓样组织和螺旋瓣固有层中存在粒细胞7 dph。 7-28 dph鱼中的脾脏主要是红肉。直到56 dph，在脾脏中才看不到白细胞和红细胞区室的分化（分别为白色和红色浆液）。在28 dph时尚未出现明显的胸腺皮质和髓样分化，并且在56，84或112 dph时未取样胸腺。直到56 dph才形成心肌组织。 Peyer的斑块以56 dph的速率存在于固有层中。因此，鱼的淋巴-髓样结构发育缓慢，应在孵化后2-4个月进行接种程序。

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