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Fig. 4 | BMC Oral Health

Fig. 4

From: Characterization of oral polymorphonuclear neutrophils in periodontitis patients: a case-control study

Fig. 4

Total protease activity measured from oral rinses originating from controls (n = 16) and periodontitis subjects (n = 16). a Total protease activity was measured as relative fluorescence per unit (RF U) and expressed as mean ± SD. *Comparisons periodontitis group versus control group, Student’s T-test, *P < 0.001. b Total protease activity was only predicted by oPMN counts in periodontitis patients (dashed line, r2 = 0.3989, P = 0.0065) and not in the control group (straight line, r2 = 0.0629, P = 0.3486)

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