Khurad A M, Thakare V K
J Hirnforsch. 1980;21(5):523-30.
In the adult buffalo-fly, L. exigua three groups of neurosecretory cells are present in each half of the brain; medial and lateral groups in the protocerebrum and ventral group in the tritocerebral region. The cerebral neurosecretory cells are classified as A and B cells. Both the cells are present in the medial, lateral and ventral groups. Histochemically, the neurosecretory material of these cells is composed of neutral mucopolysaccharides and proteins. The A cells are rich in cystine or cysteine amino acids, whereas B cells either lack them or may contain in negligible quantity but are rich in basic amino acids. A single pair or nerves, nervi corporis cardiaci, emerges out of the brain and merges with the recurrent nerve which later on enters the corpus cardiacum and terminates into the hypocerebral ganglion. The corpus cardiacum primarily functions as storage organ for cerebral neurosecretory material and secondarily may also produce its own hormone. The corpus allatum is composed of a single type of cells and some times it appears as syncytial structure. Cerebral neurosecretory material is never found in the corpus allatum.
在成年水牛蝇（L. exigua）中，大脑每半侧存在三组神经分泌细胞；原脑中有内侧组和外侧组，后脑区域有腹侧组。脑内神经分泌细胞分为A细胞和B细胞。这两种细胞都存在于内侧组、外侧组和腹侧组中。组织化学研究表明，这些细胞的神经分泌物质由中性粘多糖和蛋白质组成。A细胞富含胱氨酸或半胱氨酸氨基酸，而B细胞要么缺乏这些氨基酸，要么含量极少，但富含碱性氨基酸。一对神经，即心体神经，从大脑中发出，与返神经合并，返神经随后进入心体并终止于咽下神经节。心体主要作为脑内神经分泌物质的储存器官，其次也可能产生自身的激素。咽侧体由单一类型的细胞组成，有时呈现为多核体结构。咽侧体中从未发现脑内神经分泌物质。
