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Experimental backgrounds of ectopic discharges were made by i.p. administrating of 4-aninopyriding (4-AP), a K(+) channel blocker, or anisodamine, a muscarinic receptor blocker, in CCI rats, and the sympathetic sprouting in the dorsal root ganglia (DRG) as well as the heat-hyperalgesia was observed. It was demonstrated that the increased ectopic discharges(More)
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