2.3 H&E staining and immunofluorescence
The acquired mice skin tissues were fixed in 4% paraformaldehyde
solution, and paraffin blocks were treated and stained by
hematoxylin/eosin (HE). For immunofluorescence staining (IFC), main
steps were performed as described previously [10]. All sections were
examined with laser confocal microsopes (AOSVI, M303-HK830).