Thus, the increase in resting [Ca2+]i appears not to be caused by a simple addition of the small "tails" of [Ca2+]~which follow after each tetanus. WESTERBLADANDALLEN [Ca2+]iin Fatigue of Single Mouse Muscle Fibers 633 Although highly significant, the elevation of the resting [Ca~+]i in the present preparation is quantitatively much smaller than that previously observed in Xenopus fibers fatigued in a similar way (Lee et al., 1991).
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Changes of myoplasmic calcium concentration during fatigue in single mouse muscle fibers.
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