Fig. 2From: What role does metal allergy sensitization play in total knee arthroplasty revision?Comparison of the ratio of CD4+ to CD8+ T cells between control (nā=ā13) and nickel sensitive (nā=ā19) groups. The control average is 0.76 and the nickel sensitive average is 1.28. Error bars show standard error. **Indicates pā=ā0.009Back to article page