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. Author manuscript; available in PMC: 2015 Jun 16.
Published in final edited form as: Otolaryngol Head Neck Surg. 2014 Aug 4;151(4):612–618. doi: 10.1177/0194599814545083

Figure 3.

Figure 3

(A, B) RACPP injection produces greater ratiometric fluorescent signal in HNSCC tumor versus normal tissue. (C) Uncleavable-control does not produce tumor-specific contrast. (D) RACPP is sensitive and specific for tumor detection. Abbreviations: HNSCC, head and neck squamous cell carcinoma; RACPP, ratiometric activatable cell-penetrating peptide.