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. 2019 Sep 2;10:1802–1817. doi: 10.3762/bjnano.10.175

Figure 1.

Figure 1

1H NMR spectra of the reaction mixture aliquots (5.6 mM cysteine, 56 mM NaBH4, and 5.6 mM AgNO3, in ultrapure water/D2O added) taken at several time points. The arrows show how proton signals (for cysteine and cystine) change with time.