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Table 4 Mean and standard deviation of saliva and serum in OPML group

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

OPML Saliva Serum
N 25 25
Mean 8.45 8.44
SD 1.65 1.62
P value 0.98  
r(P) 0.82 (0.000*)