Tokunaka S, Murakami U, Ohashi K, Okamura K, Yachiku S
J Urol. 1984 Nov;132(5):1040-3. doi: 10.1016/s0022-5347(17)49995-2.
The male rabbit's external urethral sphincter was investigated with O'Farrell's 2-dimensional electrophoretic analysis of myosin light chains and electron microscopy. Its pattern of myosin light chains was different from that of the soleus (predominantly slow twitch muscle) but was very similar to that of the psoas (predominantly fast twitch muscle). Ultrastructurally it was shown to be red muscle resembling the soleus. Therefore the fiber type of the rabbit's external urethral sphincter was determined to be the red (fast) type.
采用奥法雷尔（O'Farrell）的肌球蛋白轻链二维电泳分析和电子显微镜技术，对雄性兔的尿道外括约肌进行了研究。其肌球蛋白轻链模式与比目鱼肌（主要是慢肌纤维）不同，但与腰大肌（主要是快肌纤维）非常相似。超微结构显示它是类似于比目鱼肌的红色肌肉。因此，兔尿道外括约肌的纤维类型被确定为红色（快）型。
