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Fig. 3 | Nanoscale Research Letters

Fig. 3

From: Multi-mode biodegradable tumour-microenvironment sensitive nanoparticles for targeted breast cancer imaging

Fig. 3

a Ultrasonic images of the targeted NPs and non-targeted NPs recorded at different pH values (7.2 and 6.8), PBS as a control. b Signal intensity rate is calculated by sample/blank, sample represents the echo intensity of the targeted and non-targeted NPs, and blank represents the echo intensity of PBS. c T2-weighted MR images of Fe3O4/Na2CO3@PLGA/Cy5.5/cRGD NPs with different Fe concentrations (0.0625, 0.125, 0.25, 0.5, and 1 mM). d The transverse relativities (r2) were 19.597 mM−1 s−1 for Fe3O4/Na2CO3@PLGA/Cy5.5/cRGD NPs

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