CCL20 and systemic lupus erythematosus: Among all subtypes of keratinocytes, we found that keratinocytes from DLE and SLE groups accounted for more than 75% of Diff kera-3, CCL20+ kera, Diff kera-4, Diff kera-5 and Diff kera-6, which suggested their amplifications in the epidermis of DLE and SLE patients (Fig. 3b and Supplementary Fig. 2c).