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Characterization of PTK-BAA films fabricated with BMP-2 and 450 kDa PAA. (A) Profilometry measurements of film thickness vs. number of tetralayer depositions indicates controlled, linear film growth. Tunability of total BMP-2 loading in PTK-BAA films via number of tetralayer depositions is demonstrated by (B) IVIS imaging of Cy5-labeled BMP-2, and (C) ELISA measurements of total BMP-2 recovered from degraded films.
