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Table 2 Patient smoking status and tissue aryl hydrocarbon receptor (AHR) activation

From: Dendritic cells provide a potential link between smoking and inflammation in rheumatoid arthritis

Tissue contribution
Patient smoking status*  
   Smoker Non-Smoker P-value
Synovia CYP1A1+ 6 1  
  CYP1A1- 1 12  
Nodules CYP1A1+ 2 4  
  CYP1A1- 2 10  
  1. *Patient smoking status when tissue sample was taken; Patients contributing paired samples were considered once for statistical analysis; P-value obtained by Fisher's exact probability two-tailed test