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Relationship between clinical oral parameters and serum endotoxin activity levels at baseline. The bars denote the mean values of the mouth pocket depths (PD) or attachment loss (AL) and the mean bleeding index [bleeding on probing (BOP)] of the mouth for the subjects stratified into endotoxin activity categories (see Fig. 6 legend). The vertical brackets enclose one standard deviation. Etx, endotoxin activity.
