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Table 2 Mean and standard deviation of saliva and serum in control group

From: Salivary and serum expression of TNF-α and Ki-67 in oral potentially malignant lesions

Control Saliva Serum
N 13 13
Mean 141.18 105.25
SD 54.05 29.24
P value 0.04*  
r(P) 0.48 (0.15)