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. 2020 Aug 4;12(8):731. doi: 10.3390/pharmaceutics12080731

Figure 7.

Figure 7

SEM imaging of enteric coating membrane (a1–a4) and inner TIL-SLNs (b1–b4) under influence factors experiments. The surface coating membrane and inner TIL-SLNs could keep intact under influence factors experiments. Note: (a1): day 0; (a2): 10th day under high temperature; (a3): 10th day under high humidity; (a4): 10th day under high light; (b1): day 0; (b2): 10th day under high temperature; (b3): 10th day under high humidity; (b4) 10th day under high light. To verify the completeness of inner TIL-SLNs, the enteric granules under high temperature, high humidity, and high light were ground by mortar and the powder was resuspended in water. Then, the mixture solution was filtered by 0.65 um filter and observed by SEM to verify the completeness of inner TIL-SLNs.