Goldstein M A, Entman M L
J Cell Biol. 1979 Jan;80(1):183-95. doi: 10.1083/jcb.80.1.183.
Sections of adult mammalian cardiac muscles fixed at room temperature reveal numerous microtubules (24--28 nm in diameter) both near the nucleus and in the extra-myofibrillar space. Microtubules encircle the nucleus, are associated with the myofibrils in a helical arrangement, and form a network that runs transversely at the level of the I band and axially between the myofibrils. Microtubules are more numerous in muscle cells than previously recognized and may perform more than cytoskeletal function.
在室温下固定的成年哺乳动物心肌切片显示，在细胞核附近和肌原纤维外空间有大量微管（直径24 - 28纳米）。微管环绕细胞核，以螺旋排列与肌原纤维相关联，并形成一个在I带水平横向延伸且在肌原纤维之间轴向延伸的网络。肌肉细胞中的微管比以前认为的更多，并且可能具有不止细胞骨架功能。
