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. 2023 Jun 8;13(6):964. doi: 10.3390/biom13060964

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Changes of infrared spectra of 1450 cm⁻¹−1150 cm⁻¹ and area ratio of C3′-endo to internal reference under different inducers. (a) The infrared spectrum under different concentrations of NaCl. (b) The infrared spectrum under different concentrations of MgCl₂. (c) The infrared spectrum of d(GC)₈ treated with different volume ratios of ethanol solution. (d) Changes of A₁₃₂₀/A₉₇₀ ratio under different concentrations of NaCl. (e) Changes of A₁₃₂₀/A₉₇₀ ratio under different concentrations of MgCl₂. (f) Changes of A₁₃₂₀/A₉₇₀ ratio under different volume ratios of ethanol.