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Second derivative FT-IR spectra of rPA in the Amide I region.
Top: unprocessed rPA control (0.25mg/ml), Bottom: rPA concentrated from reconstituted SFD rPA formulation-2 (0.24mg/ml)
Note: secondary structure element was assigned according to Table 2 in Schüle et al Eur J Pharm Biopharm. 2007, 65(1):1-9)
