Kikuchi S, Pévet P, Shiraishi K
Cell Tissue Res. 1984;236(1):15-8. doi: 10.1007/BF00216507.
Ten or more straight tubules, each of which consists of a double unit membrane of granular endoplasmic reticulum with a cylindrical profile, are joined side by side in a raft-like configuration in the cytoplasm of the pinealocytes of Japanese moles. They measure about 60 nm and 100 nm in their inner and outer diameters, respectively, and are often partially connected to unspecialized granular endoplasmic reticulum. Cisterns held between the inner and outer unit membranes with cylindrical profiles vary from 15 nm to 30 nm in width. Ensheathed portions of the cytoplasm are contiguous with cytoplasm outside the tubular units. The inner unit membranes of the tubules bear fewer ribosomal particles than the outer ones.
在日本鼹鼠松果体细胞的细胞质中，十条或更多条直管并排连接成筏状结构。每条直管由具有圆柱形轮廓的颗粒内质网的双层单位膜组成。它们的内径和外径分别约为60纳米和100纳米，并且常常部分地与未特化的颗粒内质网相连。在内、外单位膜之间呈圆柱形轮廓的池宽度在15纳米至30纳米之间变化。小管的包被部分与管状单位外部的细胞质相邻。小管的内单位膜比外单位膜上的核糖体颗粒少。
