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Log-linear plots of anti-rHA2 IgG1/IgG2b (A and B) or anti-rHA2 IgG2a/IgG2b (C) ratios versus alveolar bone levels in each of the eight animals inoculated with rHA2 in PBS (group A). Charts depict subclass ratios from serum collected at either day 56 (A) or day 84 (B and C) of the experimental period. A solid line in each panel represents the trend line.
