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CEST Z-spectra (a, b), AREXfit spectra (c, d), and 1H MRS spectra (e, f) from sample #1 (EWA + Cre) (blue), sample #2 (EWA) (red), sample #3 (dialyzed EWA + Cre) (magenta), and sample #4 (diluted EWA) (green). T1w are ~3.2 s for sample #1 and #2, and ~3.4 s for sample #3 and #4.
