Fig. 1From: Multi-mode biodegradable tumour-microenvironment sensitive nanoparticles for targeted breast cancer imagingTEM images (a) Size distributions (b) Zeta potential (c) of Fe3O4/Na2CO3@PLGA/Cy5.5/cRGD NPs. d Fluorescence emission spectrum of Fe3O4/Na2CO3@PLGA/Cy5.5/cRGD and Fe3O4/Na2CO3@PLGA/cRGD NPs. e Magnetic hysteresis curves of Fe3O4/Na2CO3@PLGA/Cy5.5/cRGD NPs and Fe3O4 NPs. f The FTIR of spectra of targeted Fe3O4/Na2CO3@PLGA/Cy5.5/cRGD and non-targeted PLGA NPsBack to article page