细胞质微管。一、水螅
CYTOPLASMIC MICROTUBULES. I. HYDRA.
作者信息
SLAUTTERBACK D B
出版信息
J Cell Biol. 1963 Aug;18(2):367-88. doi: 10.1083/jcb.18.2.367.
Abstract
Small cytoplasmic tubules are present in the interstitial cells and cnidoblasts of hydra. They are referred to here as "microtubules." These tubular elements have an outside diameter of 180 A and an inside diameter of 80 A. By difference, the membranous wall is estimated to be 50 A thick. The maximum length of the microtubules cannot be determined from thin sections but is known to exceed 1.5 micro. In the interstitial cells the microtubules are found in the intercellular bridges, free in the cytoplasm and in association with the centrioles. In the cnidoblast they form a framework around the developing nematocyst and in late stages are related to the cnidocil forming a tight skein in the basal part of the cell. Especially in this cell, confluence of microtubules with small spherical vesicles of the Golgi complex has been observed. It is proposed that these tubules function in the transport of water, ions, or small molecules.
摘要
水螅的间质细胞和刺细胞中存在小的细胞质小管。在此将它们称为“微管”。这些管状结构外径为180埃，内径为80埃。由此推算，其膜壁厚度约为50埃。从薄片中无法确定微管的最大长度，但已知其超过1.5微米。在间质细胞中，微管存在于细胞间桥中、游离于细胞质中并与中心粒相关联。在刺细胞中，它们围绕发育中的刺丝囊形成一个框架，在后期与刺丝泡相关，在细胞基部形成紧密的一束。尤其在这种细胞中，已观察到微管与高尔基体的小球形囊泡融合。有人提出这些小管在水、离子或小分子的运输中起作用。
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