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TLC assay of the ECGT reaction extract. Lane 1, ECG was produced with substrates βG and EC. Lane 3, EGCG was produced with substrates βG and EGC. Lane 5, no product was produced with substrates βG and GC. Lanes 2, 4, and 6 are catechin standards. Boxed band a, ECG; boxed band b, EGCG.
