多斑叶须虫（多毛纲）担轮幼虫中的新型后感觉器官。
Novel, posterior sensory organ in the trochophore larva of Phyllodoce maculata (Polychaeta).
作者信息
Nezlin L P, Voronezhskaya E E
机构信息
Institute of Developmental Biology, Russian Academy of Sciences, Moscow 117808, Russia.
出版信息
Proc Biol Sci. 2003 Nov 7;270 Suppl 2(Suppl 2):S159-62. doi: 10.1098/rsbl.2003.0072.
Abstract
A new posterior sensory organ (PSO), located at the dorsal midline of the hyposphere, is described by immunocytochemical detection of acetylated alpha tubulin and serotonin (5-HT) in a laser-scanning microscope, as well as three-dimensional reconstructions after optical serial sectioning in the trochophore larva of the polychaete Phyllodoce maculata (Phyllodocidae). The unpaired PSO consists of five bipolar sensory cells, two of them being 5-HT immunopositive, which send axons to the cerebral ganglion and prototroch nerve. The dendrites of these cells project to the surface and bear one cilium each. A single neuronal fibre from the apical sensory organ innervates the PSO.
摘要
通过在激光扫描显微镜下对乙酰化α微管蛋白和血清素（5-HT）进行免疫细胞化学检测，以及对多毛纲叶须虫（叶须虫科）担轮幼虫进行光学连续切片后的三维重建，发现了一种位于下球体背中线的新的后感觉器官（PSO）。不成对的PSO由五个双极感觉细胞组成，其中两个为5-HT免疫阳性，它们将轴突发送到脑神经节和原轮神经。这些细胞的树突伸向表面，每个都有一根纤毛。来自顶端感觉器官的单一神经纤维支配PSO。
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