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Bio-TEM images of the cell uptake of Au-TDNNs in MCF-7 cells. The blue arrows point to the nucleuses and the red arrows point to Au-TDNNs. (A-C) The uptake of Au-TDNNs in the same perspective, (A, B) Enlarged view of (C). (D) The uptake of Au-TDNNs in the other perspective.
