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. 2020 Jul 23;15:5203–5215. doi: 10.2147/IJN.S253094

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© 2020 Lu et al.

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3D and corresponding contour fluorescence spectra of pure bovine serum albumin (BSA) (A) and BSA-metformin (B) mixture. Conditions: pH 7.4; c(BSA) = 1 ×10⁻⁶ M; c(metformin) = 2.5×10⁻⁵ M.