Overview To Study the Use of Humanized CD25 in Preventing the Relapse of Psoriasis Vulgaris Status: Completed Trial end date: 2008-04-01 Target enrollment: Participant gender: Summary This study is designed to study disease relapse after NBUVB and how the administration of Daclizumab/placebo alters disease relapse. Phase: Phase 1/Phase 2 Details Lead Sponsor: Rockefeller UniversityCollaborator: Facet BiotechTreatments: DaclizumabImmunoglobulin G