Examples of recovery from inactivation following 1P and 10P test stimuli for FGF14 KO cells. Each panel shows recovery from inactivation following a single 10-ms step to 0 mV (blue), and then following a 10-Hz train of 10 pulses to 0 mV (red). A total of 24 FGF14 KO cells from 7 different animals were compared with the 1P and 10P protocols. Three cells in column 2 exhibited clear two-component recovery from inactivation following both 1P and 10P protocols. For these three cells, despite a smaller slow component of recovery following the 1P protocol, the 10P protocol resulted in a fraction of slow recovery comparable to or even larger than that observed in WT cells (Fig. S3).