Figure 2. The Megsin-Cre transgene has expression specifically in the skin.
Whole-mount β-galactosidase assay (A–B) and X-gal analysis on skin cryostat section (C) revealed the occurrence of Cre-mediated loxP recombination in the hair follicles and epidermis. A: E14.5 embryos. B: skin of P3 transgenic mouse. C: skin section from P3 transgenic mouse. Immunohistochemical analysis indicated Megsin was expressed in all epidermal layers (D-L). D-F: YFP colocalized with E-cadherin staining in the skin epithelium, G-I: YFP colocalized with K10 staining in the suprabasal layers of the epidermis and other cornified stratified epithelia, J-L: YFP colocalized with K14 staining in the basal layer of the epidermis. Scale bar: 100 μm.