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. 2017 Mar 31;12:2607–2620. doi: 10.2147/IJN.S133078

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© 2017 Cho et al. This work is published and licensed by Dove Medical Press Limited

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Phase transition and change in MR properties of collagen/γ-PGA/MnFe₂O₄ hydrogels.

Notes: (A) Photographs of phase transition for collagen/γ-PGA/MnFe₂O₄ hydrogel. Photographs were obtained in vials and NMR tubes. (B) Resonance-selective discrimination of MR images for collagen/γ-PGA and collagen/γ-PGA/MnFe₂O₄ hydrogels with temperature increase. Inner area indicates collagen/γ-PGA hydrogel without MnFe₂O₄ and outer area indicates collagen/γ-PGA/MnFe₂O₄ hydrogel. MR imaging experiment was performed on a 600 MHz NMR spectrometer. (C) Schematic illustration of the change in T2 relaxation time due to phase transition of collagen/γ-PGA/MnFe₂O₄ hydrogel with temperature increase.

Abbreviations: MR, magnetic resonance; γ-PGA, poly(γ-glutamic acid); NMR, nuclear magnetic resonance; TE, echo time.