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Confocal microscopy and transmission images of the multimodal peptide conjugates on MDAMB231CXCR4+ cells. A) 1 μM of monomer Ac-TZ14011-MSAP (3); B) 1 μM of dimer (Ac-TZ14011)2-MSAP (6); C) 1 μM of tetramer (Ac-TZ14011)4-MSAP (10); D) 1 μM of MSAP (1).
