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In vivo and ex vivo imaging of tumor targeting by pep27 and pep27-24M: (A) in vivo fluorescence imaging of pep27 and pep27-24M to tumor; (C) ex vivo fluorescence imaging of tumor accumulation and biodistribution; and (B, D) quantification of the fluorescence signals in vivo and ex vivo. Fluorescence intensity was measured in terms of counts/energy/area and is presented as an average (n = 3).
