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. 2021 Nov 5;13:8341–8352. doi: 10.2147/CMAR.S337497

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© 2021 Wang et al.

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Line chart of quantitative detection results for low, medium and high levels of the serum samples stored at 4 °C and 25°C for eight time points. (A) The quantitative detection results of the low, medium and high levels of the serum samples stored at 4 °C for 0, 1, 2, 3, 4, 5, 6 and 7 d. (B) The quantitative detection results of the low, medium and high levels of the serum samples stored at 25 °C for 0, 1, 2, 3, 4, 5, 6 and 7 d.