Fig. 6

a The diameter and b the radial stiffness changes of the A-band regions of single myofibrils depending on the ionic strength of the bathing solution. Rigor (filled circle) and relaxed (opened circle) myofibrils. Dashed traces in (a) are the thickness of the rigid core. Each data point was normalized by that for myofibrils in the rigor state at the ionic strength of 200 mM. See text for details