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Figure 4. Effects of eugenol on [Ca2+]i in capsaicin-responsive TG neurons. (A) Eugenol (1 mM) increased [Ca2+]i. The enhancement of [Ca2+]i was abolished by CZP (10 µM) (B) and RR (C). Capsaicin (1 µM), as a positive control, also evoked Ca transient (A), which was completely abolished by CZP (10 µM) (B) and RR (10 µM) (C).