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(a) Molecular structure of the 4-(N,N’-dibenzylamino)phenyl substituted squaraine dye (29) used for PAI studies by An et al. (138). In vivo PAI of 4T1 tumor bearing mice (b) without and (c) with 29-albumin nanoparticle administration. Reproduced with permission from ref. 138. Copyright 2014 American Chemical Society.
