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Fig. 1 | Journal of Nanobiotechnology

Fig. 1

From: Injectable pH-responsive hydrogel for combinatorial chemoimmunotherapy tailored to the tumor microenvironment

Fig. 1

Characterization of pH-responsive hydrogel scaffold. A Simplified structure of chitosan (CTS), silk fibroin (SF), and dibenzaldehyde-functionalized polyethylene glycol (DF-PEG). B The formation process and pH-responsive property of hydrogel scaffold. DOX was used as a model drug and indicator. C Fourier transforms infrared spectroscopy (FTIR) of CTS, SF, DF-PEG and hydrogel. D Representative Cryo-SEM image of gel scaffold treated by pH 7.4 buffer solutions. E, F Cumulative release profiles of DOX and JQ-1 from hydrogels incubated with pH 7.4, pH 6.5 and pH 5.0 buffer solution, respectively

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