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Quantitative analysis of the reduction of Ag precursor by ascorbic acid without seeds in the presence of (a and b) T20, (c and d) A20, and (e and f) C20. (a, c, and e) Concentrations of ascorbic acid in the reaction solution, and (b, d, and f) rates of solution reduction and surface reduction as a function of time in the presence of the three DNA sequences.
