Figure 7

Light microscopy image (a) and scanning transmission X-ray microscopy (STXM) image (b) of a hair follicle opening with a central hair (H) at 270 eV of a 350 nm ultramicrotome section of human facial skin incubated with silica particles (161 ± 13 nm) with a 42 ± 3 nm gold core. Higher magnification of the STXM image visualized single particles (arrows) in an infundibulum on the surface and between corneocytes (pound sign) of the stratum corneum (c).

© De Gruyter