Table 3.

Effect of 0.03 mM Arbutin on the membrane potential of root cortex cells of Phaseolus vulgaris

Maximum hyperpolarization	1.0 +/− 0.36 mV
Maximum depolarization	7.5 +/− 1.96 mV
Time to maximum hyperpolarization	2.7 +/− 0.2 min
Time to maximum depolarization	16.9 +/− 1.5 min

Shown are the mean maximum hyperpolarization, the mean maximal depolarization, the mean time to maximal hyperpolarization, and the mean time to maximum depolarization of the membrane potential following inclusion of 0.03 mM hydroquinone in the perfusion stream bathing of P.vulgaris root cortex cells, each +/− the s.e. of the mean. N = 10. Mean initial membrane potential = −151.6 +/− 6.4.