Matera E M, Davis W J
Cell Tissue Res. 1982;222(1):25-40. doi: 10.1007/BF00218286.
Scanning electron microscopy of various regions of the body of the marine gastropod Pleurobranchaea californica (McFarland) has revealed a characteristic cell type that bears cilia with dilated discoid-shaped tips. The tips of the cilia consist of an expansion of the ciliary membrane around a looped distal extension of the axoneme. These kinocilia have been observed in numerous other marine invertebrates and are generally referred to as paddle cilia (Tamarin et al. 1974) or discocilia (Heimler 1978). Although many functions have been proposed for paddle cilia, little empirical evidence supports any of the proposals. In Pleurobranchaea we have found that the distribution of this ciliated cell type corresponds exactly to areas of the body known from behavioral studies (Lee et al. 1974; Davis and Matera 1981) to mediate chemoreception. Transmission electron microscopy of the epithelium lining the rhinophores and tentacles of Pleurobranchaea revealed details of the ultrastructure of these ciliated cells and showed that they are primary receptors. These ciliated receptors lie in a yellow-brown pseudostratified columnar epithelium that superficially resembles the olfactory mucosa of vertebrates.
对海蛞蝓加州侧鳃（McFarland）身体不同部位进行扫描电子显微镜观察，发现了一种特征性细胞类型，其纤毛顶端呈膨大的盘状。纤毛顶端是围绕轴丝环状远端延伸的纤毛膜扩张形成的。这种动纤毛在许多其他海洋无脊椎动物中也有观察到，通常被称为桨状纤毛（Tamarin等人，1974年）或盘状纤毛（Heimler，1978年）。尽管对桨状纤毛提出了许多功能，但几乎没有实证证据支持这些说法。在加州侧鳃中，我们发现这种纤毛细胞类型的分布与行为学研究（Lee等人，1974年；Davis和Matera，1981年）已知的身体介导化学感受的区域完全对应。对加州侧鳃嗅角和触手内衬上皮进行透射电子显微镜观察，揭示了这些纤毛细胞超微结构的细节，并表明它们是初级感受器。这些纤毛感受器位于黄褐色的假复层柱状上皮中，表面上类似于脊椎动物的嗅觉黏膜。
