| AD | Atopic dermatitis |
| SP | Spilanthol |
| IgE | Immunoglobulin (Ig) E |
| IgG2a | Immunoglobulin (Ig) G2a |
| IgG1 | Immunoglobulin (Ig) G1 |
| COX-2 | Cyclooxygenase-2 |
| iNOS | Inducible NO synthase |
| DNCB | 2,4-dinitrochlorobenzene |
| MAPK | Mitogen-activated protein kinase |
| ERK | Extracellular signal-regulated kinase |
| JNK | c-jun N-terminal kinase |
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