Muscle. A fine time for contractual alterations.
Huxley
A
A
D000199:Actins / Q000737:chemistry / Q000502:physiology; D000818:Animals; D008954:Models, Biological; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology* / Q000648:ultrastructure; D009218:Myosins / Q000737:chemistry / Q000502:physiology; D014961:X-Ray Diffraction
D000199:Actins; D009218:Myosins