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Characterization of bioactive supramolecular nanofibers (bsn). (A) Chemical structure of bsn. (B) Ribbon structure of human IGF-1 protein. The C-region of the protein is shown in light green and is denoted by the box. (C) Optical images showing the transparent suspension of bsn after heating turning opaque after cooling at room temperature. (D) TEM image of the bsn suspension. Scale bar = 200 nm. (E) FTIR spectrum of bsn.
