Ved plaque psoriasis fører infiltration med inflammatoriske celler, inklusiv T- celler, til forhøjede TNF niveauer i psoriasis læsionerne sammenlignet med niveauerne i ikke- angrebet hud.
In plaque psoriasis, infiltration by inflammatory cells including T-cells leads to increased TNF levels in psoriatic lesions compared with levels in uninvolved skin.