Fig 2b [doi:10.1038/19539] Mills AA; Zheng B; Wang XJ; Vogel H; Roop DR; Bradley A "p63 is a p53 homologue required for limb and epidermal morphogenesis." 1999 Nature 398(6729):708-13 [PMID:10227293] © Nature Publishing Group. Reproduced with permission from Nature.