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- W2034976727 abstract "In the procedure for quality control of red cell concentrates, made white cell (WBC)-poor by filtration, the particle-counting technique was found to be insufficiently sensitive in detecting the remaining WBCs and platelets. Therefore, direct radioimmunoassays were developed using murine monoclonal antibodies specific for platelets, granulocytes, and T lymphocytes. The sensitivity for platelets was 40 x 10(3) per mL, that for granulocytes was 10 x 10(3) per mL (starting from 0.2 mL of red cell filtrate), and that for T lymphocytes was 0.006 x 10(6) per mL (starting from 5 mL) and 0.0015 x 10(6) per mL (starting from 50 mL). These direct assays were used in experiments on filtration with three types of filters: the Cellselect B-1005, B-1014 and the B-1013 (bedside filter). After filtration of 1 unit of blood cell suspension through the B-1005, the number of remaining platelets was found to vary between less than or equal to 0.04 x 10(6) and greater than 15 x 10(6) per mL (n = 16); after filtration through the B-1013 filter, the remaining platelets were greater than 0.04 x 10(6) per mL. Upon filtration of a second unit of blood cell suspension through the B-1013 filter, the number of remaining platelets varied between less than or equal to 0.04 x 10(6) and 5 x 10(6). In both filter types, the number of remaining granulocytes was always less than 0.01 x 10(6) per mL. A study of T-lymphocyte contamination revealed that, upon filtration of 1 unit of blood through the B-1005, T-lymphocyte numbers were less than or equal to 0.0015 x 10(6) to 0.15 x 10(6) per mL (starting from 5 and 50 mL); upon filtration through the B-1013 filter, the number of remaining T lymphocytes varied between less than or equal to 0.006 x 10(6) and 0.2 x 10(6) per mL (starting from 5 mL). After filtration of a second unit of blood cell suspension through the B-1013 filter, the number of remaining T lymphocytes ranged from less than or equal to 0.006 x 10(6) to 0.1 to 0.5 x 10(6) per mL (starting from 5 mL). The direct radioimmunoassay is an improvement over the present electronic particle-counting techniques with regard to both sensitivity and specificity and may therefore be useful in quality control procedures in blood transfusion as well as in the development of new filters." @default.
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- W2034976727 date "1990-02-01" @default.
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- W2034976727 title "A new radioimmunoassay for the detection of small amounts of white cells and platelets in red cell concentrates: implications for blood transfusion" @default.
- W2034976727 doi "https://doi.org/10.1046/j.1537-2995.1990.30290162896.x" @default.
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