Fig. 4. ATF3 is upregulated in LKs in epidermal wounds in vivo. Cryostat sections were prepared from wounds in neonatal mouse epidermis 0 (a), 4 (b) and 18 hours (c) post wounding. The wounds were stained with an anti-ATF3 antibody. White arrows indicate the wound edge. (d) Composite image of a 4 hour wound showing expression of ATF3 in LKs adjacent to the wound edge but not in the following cells distant to the wound. Bar, 20 µm.