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. 2016 Jan 27;6:19370. doi: 10.1038/srep19370

Figure 12.

Figure 12

(a) skin tissue images in which hyperkeratosis was shown on the surface of epidermis (100×); (b) skin tissue focus on subcutaneous area. Inset shows the BSA hydrogel residue in th imjection site (40×) (20 days post injection).