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![Promising future: a review of clinical applications of biopolymers in renal cell carcinoma](https://image.oaes.cc/b4c12267-660c-48fc-8ab1-639f47b0e0d7/jcmt4012.fig.5.jpg)
Figure 5. Lipid-based NPs have flexible surface modification options, including cell coating, Vitamin, etc.; they can also change the surface toughness to suit different drug delivery needs for lipid-based. Meanwhile, lipid-based NPs can receive intrinsic or extrinsic stimuli to produce a response (usually rupture), with intrinsic motivations including various enzyme levels, metabolic changes, and other precision regulation, and extrinsic stimuli including physical stimuli such as sound, light, and electricity.