Fig. 5. (A, B, D, E) LA-ICP-MS images of the 107Ag+ (green spots), 197Au+ (red spots) and 57Fe+ (blue spots) intensity distribution inside fibroblast cells after 24 h-exposure to Ag–Magnetite (B) and Au–Magnetite (E) and the corresponding bright field images (A, D). (C, F) Representative line scans of the cell regions marked yellow in B and E. (C) Intensity distribution of Ag–Magnetite and (F) of Au–Magnetite. Laser spot size: 15 μm, pixel size: 2.7 μm × 10 μm (Ag–Magnetite) and 2.8 μm × 10 μm (Au–Magnetite), line distance: 10 μm, scan speed: 15 μm s–1, repetition rate: 10 Hz, fluence: 0.3 J cm–2, scale bar: 50 μm.
