employed confocal fluorescence microscopy to investigate the specific uptake of epidermal growth factor, EGF‐ conjugated nanoparticles in lung cancer cells.[17] Despite the abundant literature on cell localization studies of various nanoparticle systems, there is a lack of information on the cell‐uptake of rhenium oxide nanoparticles and of cell accumulation studies. This evidence concerns the gene EGF and lung carcinoma.