An assembly of devices used for extracorporeal photoimmunetherapy to treat immune disorders, especially cutaneous T-cell lymphoma (CTCL). A photoactivatable drug (psoralen) is ingested by the patient, after which peripheral blood is drawn into a disposable set that is installed in the system's main unit (or the drug is later injected into a subsequent leukocyte-enriched fraction). The white cells or buffy coat and a small amount of plasma are isolated, via the system's centrifuge, and together with the drug are irradiated with ultraviolet A (UVA) from a lamp assembly. The treated leukocyte-enriched component and untreated blood components are returned to the patient for treatment.
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