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Recovery of Retics after filtration of whole blood through cellulose. Samples of cells as suspensions of approximately 20% Ht, before and after filtration through cellulose were analyzed in 21 independent experiments as described in Materials and Methods section. An average of approximately 10% of Retics was lost during filtration (n = 21, p = 0.014 at the paired Student’s t-test; CV, coefficient of variation).
