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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: Biomaterials. 2010 Mar 19;31(17):4639–4656. doi: 10.1016/j.biomaterials.2010.02.044

Fig. 12.

Fig. 12

Photodegradable peptide backbone (A) containing the residue of 2-(nitrophenyl)glycine (NPG), and photoisomerizable peptide backbone (B) containing the residue of 4-[(4-amino)phenylazo]benzoic acid (APB).