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- W2466756665 abstract "PRP methods for production of WBC-poor red blood cell (RBCC) and platelet concentrates (PC) are investigated using top-and-bottom bags and Optipress separators. A standard centrifugation method (profile A) and 2 methods (profiles B and C) for a computer run centrifugation using 21 (profile B) or 19 (profile C) varying time segments and g numbers. An MS-DOS-compatible personal computer runs a Cryofuge 6000. 500 ml fresh whole blood are collected in triple and/or quadruple top-and-bottom blood bags. Samples of 163 blood donors, 163 RBCCs and 161 PCs are analyzed by a Coulter Counter T 540. Blood smears of 5 RBCCs made by profile B are evaluated. Mean WBC contamination of RBCCs produced by profiles A, B and C is found to be lower than 5 x 10(8)/RBCC. None of the 5 blood smears can be counted out completely. The full number of 100 WBCs is not detected. All WBCs found are polymorphous nuclear cells. Mononuclear cells (MNC) are not evident. PCs produced by profile B contain a mean platelet yield of (76.4 +/- 21.2) x 10(9)/PC and a WBC contamination of (1.2 +/- 0.7) x 10(7)/PC. The PCs of profile B differ significantly (p < 0.001) from those of profile A and profile C. The results show a high quality of RBCC and PC produced by PRP methods using top-and-bottom blood bags and Optipress separators. Employing a computer run centrifuge, PC and RBCC contain a similar WBC contamination compared with concentrates produced by buffy coat methods.(ABSTRACT TRUNCATED AT 250 WORDS)" @default.
- W2466756665 created "2016-07-22" @default.
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- W2466756665 date "1992-01-01" @default.
- W2466756665 modified "2023-09-23" @default.
- W2466756665 title "[Procedure for production of leukocyte depleted erythrocyte and thrombocyte concentrates (PRP method) using top and bottom bags, Optipress automated separators and a computer controlled Cryofuge 6000]." @default.
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