Schmalbruch H
Nature. 1979 Sep 13;281(5727):145-6. doi: 10.1038/281145a0.
Fast twitch fibres of rat and rabbit show rectangular patterns of intramembrane particles in freeze-fracture preparations of the sarcolemma. These 'square arrays' are almost totally absent in the slow twitch coleus muscle of rat. I report here differences in the incidence of square arrays in human fetal and adult muscle and in different fibres within a human muscle. Square arrays probably classify fast and slow twitch fibres in freeze-fracture preparations of mixed muscles.
在大鼠和兔子的快速抽搐纤维中，肌膜的冷冻断裂制备物显示出膜内颗粒的矩形图案。这些“方形阵列”在大鼠的慢速抽搐彩叶草肌肉中几乎完全不存在。我在此报告人类胎儿和成人肌肉以及人类肌肉内不同纤维中方形阵列发生率的差异。在混合肌肉的冷冻断裂制备物中，方形阵列可能用于区分快速和慢速抽搐纤维。
