PUVA TherapyPhotopheresisMethoxsalenPhotochemotherapyAnthralinUltraviolet TherapyExtracorporeal CirculationUltraviolet RaysHematoporphyrinsPhototherapyFicusinLymphoma, T-Cell, CutaneousPsoriasisPhotosensitizing AgentsGraft vs Host DiseaseSpectrophotometry, UltravioletRadiation EffectsErythemaSunscreening AgentsMicroscopy, UltravioletSunlightDose-Response Relationship, RadiationMice, Hairless