Expression of CXCR3 and CCR5 mRNA in rat lumbar DRG following focal nerve demyelination. (A) Many sensory neurons in the lumbar DRG removed from vehicle-treated rats exhibited CXCR3 mRNA transcripts at POD14 (n = 3). (B) CCR5 mRNA expression was absent from the lumbar DRG of vehicle-treated rats at POD14 (n = 3). (C) CXCR3 mRNA expression patterns in sensory neurons subjected to focal nerve demyelination did not differ from vehicle-treated rodents at POD14 (n = 4), but there was an increase in the intensity of CXCR3 mRNA expression. (D) Many neurons in the injured rat lumbar DRG expressed CCR5 transcripts at POD14 (n = 4). Scale bar is 250 μm (A and C); 100 μm (B and D).