Fig. 11
From: Tiny Rare-Earth Fluoride Nanoparticles Activate Tumour Cell Growth via Electrical Polar Interactions
TEM images and elemental analysis of RE-NPs at the surface boundaries of A549 cells. a TEM image of small size LaF3 NPs surrounding the A549 cells. b Elemental analysis of F atoms in RE-NPs distributed around the cell. c Elemental analysis of La atoms. The low concentration of La atoms was associated with a rather small scattering efficiency of the X-rays. d–f The same as for (a–c) for PrF3 RE-NPs