| http://digfir-published.macmillanusa.com/lodish_animation/a1704_myosin_crossbridge.html | Chapter 17. Myosin-Actin Cross Bridge Cycle
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| http://digfir-published.macmillanusa.com/lodish_animation/a1704_myosin_crossbridge_dlap.xml | DLAP questions | 519bca43b11c0f13680000a0 |