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Table 5 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 3.01 2.80
SD 0.53 0.33
P value 0.09  
r(P) 0.81 (0.004*)