Fig. 2

Effects of borneol, 2-methylisoborneol, and fenchyl alcohol on HEK293T cells expressing hTRPA1. Representative whole-cell current traces in the presence of borneol (1 mM, a), 2-methylisoborneol (1 mM, b), fenchyl alcohol (1 mM, c) or norcamphor (1 mM, d) in HEK293T cells expressing hTRPA1. hTRPA1 activity was confirmed with 20 μM of allyl isothiocyanate (AITC). Cells were held at −60 mV and ramp-pulses from −100 to +100 mV (500 ms) were administered every 5 s