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FT-IR/ATR spectra of the Tanaceti flos aqueous extract (green line) and related Ag-NPs obtained from a mixture of 1 mM AgNO3 and aqueous extracts of tansy flower in a ratio of 9:1 (v/v) (blue line), 1:1 (v/v) (red line), and 1:9 (v/v) (yellow line).
