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Figure S1. Outline of the comet assay protocol

Table S1. Catechin concentration of the green tea used in the study, measured by liquid chromatography with tandem mass spectrometry (LC-MS/MS) as previously described in detail [5].

Table S2. Plasma catechins in samples collected pre- and post- single dose of green tea and after 7 days’ green tea supplementation, with water as control treatment; data are mean (SD) nmol/L, n = 16 (Table simplified from that previously published [5]).

Table S3. Primers for each gene of interest; primers were from Invitrogen (Life Technologies, Carlsbad, CA)

Table S4. Gene expression in peripheral lymphocytes collected from 16 healthy adults after a single dose and after 7-days’ supplementation with green tea or water (as control). Data are median (95% CIs) of ratio of the genes of interest with reference to two housekeeping genes, CD3ε and CD8β. Each sample was tested in triplicate.

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