Fig. 2From: Molecular imaging of HER2 expression in breast cancer patients using a novel peptide-based tracer 99mTc-HP-Ark2: a pilot studyCy5-Ark2 binding to cell lines on confocal microscopy. A Confocal images of Cy5-Ark2 binding to SK-BR-3 (HER2-positive) and MCF7 (HER2-negative) cells with/without trastuzumab or rk peptide blocking. B Colocalized staining of SK-BR-3 cells with FITC-trastuzumab and Cy5-Ark2Back to article page