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Wholemount dorsal root ganglia (DRG) exhibit fluorescent sensory neurons following bladder wall injections of cholera toxin β subunit-conjugated to Alexa Fluor 555 (CTB-555). Three days after bladder wall injections, CTB-555 was observed in both lumbar (B) S1 DRG. CTB-555 was absent in L4 DRG (A).
