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. 2021 Jul 2;19:196. doi: 10.1186/s12951-021-00939-9

Fig. 9.

Fig. 9

In vivo SPECT imaging of laser-induced mice after intravitreal injection of a 131I-RGD-PEI/SAA, b 131I-mPEI/SAA, c 131I-SAA, and d Na131I at different time points of 6, 24, 48, 72 and 96 h. e The relative SPECT signal intensities were quantitatively analyzed