CD4 and atopic eczema: In the atopic dermatitis model WT mice efficiently recruited Treg cells into the affected skin, as evidenced by an increase in FoxP3-expressing Treg cells in the affected skin shown both by the qRT-PCR (Figure 6A and Figure S1) and by flow cytometry, in which high numbers of CD4+FoxP3+ Treg cells were found in the affected skin in WT mice (Figure 8B–D).