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. 2023 Aug 19;6:863. doi: 10.1038/s42003-023-05239-6

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Fig. 2 — CD spectra of IGF2 (black), big-IGF2(87) (red), big-IGF2(104) (blue), and pro-IGF2(156) (green) recorded in 0.1% CH₃COOH (a). Secondary structure content (SSC, in %) estimated using BeStSel according to CD spectra (b).