Table 5.

Inhibition of peak I_Na at−20 mV as a function of CTX concentration

	1	3	10
rNav1.2	83.9±5.0 (n=8)	72.0±1.1 (n=3)	72.4±1.6 (n=3)

Amplitude of I_Na at −20 mV is given as a percentage of the control value(zero CTX) for the indicated concentrations of CTX (μmol l⁻¹).

^*Significant difference between 1 and 3 μmol l⁻¹ CTX in isoforms rNa_v 1.4 and rNa_v 1.5 (P<0.05).