Therakos Cellex Photopheresis System || CellexUSA & Cellex. || The photopheresis system is indicated for use in the ultraviolet-A (UVA) irradiation in the presence of the photoactive drug 8-methoxypsoralen (8-MOP) of extracorporeally circulating leukocyte-enriched blood in the palliative treatment of the skin manifestation of cutaneous T-cell lymphoma (CTCL) in person who have not been responsive to other forms of treatment. The Cellex procedural kits are designed to interface with the Cellex Photopheresis System to perform cell separation and photo activation in a single closed and sterile circuit. This is accomplished by use of an integrated centrifuge bowl and associated tubing for separation of whole blood into red blood cells, plasma, and buffy coat (leukocyte-enriched blood). All blood components are returned to the patient. The procedural kits are fully assembled as received by the customer and the customer is only required to place the components in the Cellex System to enable the system for use.