Leukoreduction system chamber extraction characteristics. Absolute number of white blood cells, including neutrophils, lymphocytes, monocytes, eosinophils, and basophils (A) and absolute number of various lymphocyte subsets, including CD4⁺, CD8⁺, CD16⁺CD56⁺, and CD19⁺ lymphocytes (B) that are present in the chamber at the end of plateletpheresis, based on group. (C) Extraction efficiency for neutrophils, lymphocytes, monocytes, eosinophils, and basophils by group. (D) Extraction efficiency for CD4⁺, CD8⁺, CD16⁺CD56⁺, and CD19⁺ lymphocytes by group. Horizontal lines indicate the median and interquartile range.