Download Interferons Part A by Sidney Pestka (Eds.) PDF

By Sidney Pestka (Eds.)

The severely acclaimed laboratory general, Methods in Enzymology, is likely one of the such a lot hugely revered courses within the box of biochemistry. in view that 1955, every one quantity has been eagerly awaited, often consulted, and praised by means of researchers and reviewers alike. The sequence includes a lot fabric nonetheless appropriate this present day - actually a necessary book for researchers in all fields of lifestyles sciences

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32 INDUCTION AND PRODUCTION OF INTERFERONS [4] WASTE F{G. 2. Continuous-flow centrifugation of leukocytes after treatment with NH4CI. the MSE rotor, the shaft hole is closed with a Teflon plug. The cells are then gently detached from the walls of the basket by the injection of cold phosphate-buffered saline (PBS) through a 21-gauge needle with a Cornwall syringe. 4, contains no calcium or magnesium and is supplemented with 25/~g of neomycin per milliliter. The cells in the basket are gently dispersed with a 20-ml pipette.

Its apparent potency of 6300 must be corrected by a factor of ~ggg to allow for the sensitivity of the assay. 1 log10 (or _~t~), then the potency of this preparation in International Units is (12,600 x 5000)/6300 or 10,000. The geometric mean of the values, thus expressed in international units, for the potency of the laboratory reference preparation obtained on 4-20 occasions is computed, and the preparation with its potency thus defined can now replace the International Reference Preparation in subsequent assays.

All rights of reproduction in any form reserved. 5 30 53 15 40 46 41 11 45 ± 15 --- 16 ± "8 -+ 10 ± 14 --- 14 ± 5 ± 11 a Data are presented as mean --- 1 SD (N equals 500 for each set). The mean volume of leukocyte concentrates was 35 ml for the anticoagulant citrate dextrose (ACD) units and 34 ml for the citrate phosphate dextrose anticoagulant (CDP) units. 6 The mean content of the 35 ml of leukocyte concentrates prepared as described is presented in Table I. More total leukocytes are obtained when CPD is used as an anticoagulant, compared to ACD.

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