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. 2001 Nov;69(11):6612–6617. doi: 10.1128/IAI.69.11.6612-6617.2001

FIG. 2.

FIG. 2

Decrease in anti-PC concentration following absorption of human serum with gram-negative bacteria. Human serum diluted 1:500 was absorbed with the indicated concentrations of A. actinomycetemcomitans D045D-40 (●), F. nucleatum D052B-16 (○), and H. aphrophilus 13252 (▾), or F. nucleatum D021B-13 (▿) as indicated in Materials and Methods. Subsequently, anti-PC antibody concentrations were determined by ELISA. Data are expressed as the decrease in anti-PC concentration following absorption ±1 standard deviation (error bars).