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Expression of Nav1.7 in the TG pulpal afferent neurons. (a–d) Immunostaining showing Nav1.7 expression in the TG. The protein expression of Nav1.7 increased in the TG in a rat model of pulpitis from days 3 through 14. The highest level of protein expression was observed on day 14. Each group included four rats. Scale bar: 100 μm.
