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Intracellular distribution of cyclic peptide cFΦR4 in A549 lung cancer cells after treatment with cFΦR4-FITC, rhodamine B-dextran, and nuclear stain DRAQ5. A, nuclear stain with DRAQ5; B, green fluorescence of internalized cFΦR4-FITC; C, red fluorescence of rhodamine B-dextran; and D, a merge of A–C.
