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Cytotoxicity of MTX-conjugated elliptical Co@Au (Co@Au NEs) nanoparticles towards SW620 colon carcinoma and C6 glioma cells, respectively, after photostimulation. (a,b) Photothermal treatment-induced detachment of MTX caused higher cell death in both cell lines (red line); however, the effect was more pronounced in Colon carcinoma cells.
