Systems and methods collect leukocyte reduced blood components, including plasma that is free or virtually free of cellular blood species, such as red blood cells, platelets, and leukocytes.Linvention concerne des systèmes et des procédés permettant de collecter des composants sanguins sans leucocytes, comprenant le plasma exempt ou pratiquement exempt despèces sanguines cellulaires, telles que les érythrocytes, les plaquettes et les leucocytes.