TSLP and in situ carcinoma: In contrast, TSLP was detected in the epidermis in 3 of 13 in situ melanoma (23%) (2 TSLP– and 2 TSLP+ biopsies are shown in Figure 7D) and in 48 of 57 invasive melanoma (85%) (6 biopsies are shown in Figure 7E) at varying levels, but all were located in epidermal suprabasal layers, similar to what was previously reported in atopic dermatitis lesioned skin (40).