Fig. 1From: pH-Responsive Triblock Copolymeric Micelles Decorated with a Cell-Penetrating Peptide Provide Efficient Doxorubicin Delivery i The FTIR spectra of pH-sensitive CA-PEI-pArg copolymer. (a) CA, (b) PEI, (c) CA-PEI, (d) pArg, (e, f, g) CA-PEI-pArg. ii 1H NMR spectrum of (a) CA, (b) PEI, (c) pArg, and (d) CA-PEI-pArgBack to article page