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. 2021 Mar 10;13(3):365. doi: 10.3390/pharmaceutics13030365

Figure 1.

Figure 1

Tumor targeted activatable cell penetrating peptides. Model for activatable cell penetrating peptide tumor localization. Polycationic cell penetrating peptide (+) and autoinhibitory polyanionic peptide (−) are connected by a metalloproteinase (MMP) 2/9 sensitive peptide linker (PLGC(Me)AG).