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Table 1 Serum free-radical levels in current heavy smokers.

From: Antioxidant activity of noni juice in heavy smokers

  Placebo 29.5 mL TNJ 118 mL TNJ
Serum SAR (μmol/mL)
Pre-test 0.23 ± 0.15 0.26 ± 0.14 0.26 ± 0.22
Post-test 0.21 ± 0.17 0.19 ± 0.10* 0.18 ± 0.11**
Serum LOOH (μmol/mL)
Pre-test 0.58 ± 0.22 0.53 ± 0.19 0.55 ± 0.21
Post-test 0.59 ± 0.21 0.40 ± 0.10*** 0.40 ± 0.14***
  1. * P < 0.01, ** P < 0.001 compared to pre-test values
  2. *** P < 0.001 compared to pre-test values and placebo