PUVA TherapyPhotopheresisMethoxsalenPhotochemotherapyFicusinPsoralensAnthralinUltraviolet TherapyExtracorporeal CirculationHematoporphyrinsPhototherapyPsoriasisPhotosensitizing AgentsLymphoma, T-Cell, CutaneousGraft vs Host DiseaseCross-Linking ReagentsUltraviolet RaysDermatitis, PhototoxicPhotochemistryAmmiPsoraleaUmbelliferonesDNA AdductsCoumarinsDNA RepairDNABlotting, SouthwesternNucleic Acid Conformation