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. 2015 Apr;145(4):303–314. doi: 10.1085/jgp.201411292

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© 2015 Ohrtman et al.

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Figure 7. — Potentiation is quantitatively similar for Ca_V1.1₁₈₆₀ and Ca_V1.1₁₆₆₆. Both the amplitude (I) and half-decay time (T) were measured for tail currents upon repolarization after either 200-ms prepulses to 40 or 90 mV (A1 and A2), or after 90-mV prepulses of 50- or 200-ms duration (B1 and B2). The number of cells examined is indicated in parentheses. There were no statistically significant differences between Ca_V1.1₁₈₆₀ and Ca_V1.1₁₆₆₆ based on a rank-sum test (I₉₀/I₄₀, P = 0.205; I₂₀₀/I₅₀, P = 1.0) or t test (T₉₀/T₄₀, P = 0.486; T₂₀₀/T₅₀, P = 0.289). Tail current repolarization potential was −20 mV for Ca_V1.1₁₈₆₀ and ranged from −20 to −40 mV for Ca_V1.1₁₆₆₆ (see Materials and methods).