Figure 3From: Novel metal allergy patch test using metal nanoballs In vivo Ni permeation from Ni-nanoball packs into mouse skin after 24-h application. Experimental setup (a), histopathological (H-E) images and elemental-distribution images of skin cross-sections obtained using SR-XRF analysis (b), and detailed elemental-distribution images obtained using micro-PIXE analysis (c).Back to article page