Törk I
Cell Tissue Res. 1976 May 6;168(2):223-8. doi: 10.1007/BF00215879.
The neurointermediate lobe of the hypophysis in the Chameleon (Chamaeleo dilepis) was examined with light and electron microscopic methods, with special reference to the cytology of the pars intermedia (PI). The PI is the largest lobe of the hypophysis consisting of (1) dark cells with secretory granules ranging from 200-600 nm; (2) light cells, far fewer in number, containing granules 150-300 nm in diameter; (3) stellate, non-secretory cells. The secretory cells abut onto the perivascular basal lamina of the capillary sinusoids while their apical part borders an intercellular space. This surface of the cells often bears a cilium. The granules arise from the Golgi cisternae while small detached vesicles are found between circumscribed sites of the cell membrane and the Golgi apparatus. No nervous elements were found in the pars intermedia and it is assumed that the regulation of this lobe is purely humoral. This is supported by the presence of three types of nerve terminals in the pars nervosa: (a) terminals with large secretory granules and small vesicles; (b) terminals with dense-core vesicles and small vesicles; (c) terminals with small vesicles only. All of these are secretory as indicated by the presence of the synaptic semidesmosomes formed with the perivascular basal lamina.
运用光学和电子显微镜方法，对变色龙（Chamaeleo dilepis）脑垂体的神经中间叶进行了检查，特别关注中间部（PI）的细胞学特征。中间部是脑垂体最大的叶，由以下细胞组成：（1）暗细胞，具有直径在200 - 600纳米之间的分泌颗粒；（2）亮细胞，数量少得多，含有直径150 - 300纳米的颗粒；（3）星状非分泌细胞。分泌细胞紧邻毛细血管窦的血管周基膜，而其顶端部分与细胞间隙相邻。细胞的这个表面通常有一根纤毛。颗粒由高尔基体池产生，在细胞膜和高尔基体的特定部位之间发现有小的游离小泡。在中间部未发现神经成分，推测该叶的调节纯粹是体液调节。神经部存在三种类型的神经末梢支持了这一推测：（a）具有大分泌颗粒和小泡的末梢；（b）具有致密核心小泡和小泡的末梢；（c）仅具有小泡的末梢。所有这些都是分泌性的，这由与血管周基膜形成的突触半桥粒的存在所表明。
