Fig. 5. Dependence of TEP oscillations on intracellular calcium. Traces from six control (A) and six BAPTA-AM loaded (B) tubules are shown. (C) Quantification of the effect of BAPTA on the coefficient of variation for the 12 traces shown in A and B. See text for details of methods. Values are means ± S.E.M., *P<0.0001 (paired t-test).