肾小球旁器又称近血管球复合体，位于肾小球血管极旁，由球旁细胞、致密斑、球外系膜细胞和极周细胞组成，是肾小管与肾小体血管极接触部位具有内分泌功能的一种特殊结构。在机体水、钠代谢，维持血液稳定方面具有重要作用。
本文用光镜和透射电镜对泰和鸡(乌骨鸡)的肾小球旁器进行了观察。
The juxtaglomerular apparatus (JGA) in the kidney of Taihe fowl was examined with light and transmission electron microscopy.
本文论述了鸟类肾小球旁器的组成及结构特点，并就其结构和功能的关系作了讨论。
The paper introduced the consist and structure of the juxtaglomerular apparatus in the avian kidney, and the relationship of its structure and function was discussed.
结果表明，泰和鸡的肾小球旁器由球旁细胞、过渡型致密斑、球外间膜细胞和极周细胞所组成。
The results show: The JGA of Taihe fowl consisted of juxtaglomerular cells, transitional macula densa, extraglomerular mesangial cells and peripolar cells.
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