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Table 1 Measurement of T and B cell parameters in young and elderly volunteers.

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

  CD4+ T cells GMN (95% CI) CD8+ T cells GMN (95% CI) B cells GMN (95% CI) Total IgG GMC (95% CI)
Normal Range 430 – 1185 180 – 865 25 – 285 591–1540
Young 879 (758–1000) 573 (487–659) 235 (156–314) 838 (757–919)
Elderly 817 (692–942) 396 (303–489) 164 (93–235) 993 (956–1030)
  1. GMC = geometric mean concentration (ug/ml), GMN geometric mean number per ml. There was no significant difference (P>0.05) between young and elderly for all values.