Fig. 2. Macroscopic phenotype of epidermal Myc KO mice. (A) One-week-old male littermates. (B) 3-month-old female littermates. (C-E) Examples of ripped-off skin on neck (C), face (D) or abdomen (E). (F) Epidermal KO mice have difficulty stretching. (G) One-and-a-half year-old epidermal KO mouse with complete loss of hair and spontaneous lesions all over the body. Ct, control littermates with neither Cre nor Myclox alleles (wt), with just Cre, or with just myclox.