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Table 6 Correlation between opsonophagocytic titers and antibody concentration.

From: Immune response to pneumococcal polysaccharides 4 and 14 in elderly and young adults. I Antibody concentrations, avidity and functional activity

   CPS CPS + PPS22F P value
PPS4 Young 0.64 0.81 0.28
  Elderly 0.69 0.79 0.51
PPS14 Young 0.90 0.88 0.78
  Elderly 0.75 0.72 0.85
  1. Correlation coefficients of association (r values) between post-immunization opsonophagocytic titer and antibody concentration following absorption with CPS or CPS + 22F in young and elderly volunteers. There was no significant difference between absorption techniques by Fisher's Z transformation.
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