Words similar to purity

Example sentences for: purity

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Purity determination
The purity of the RNA was assessed by A 260 : A 280 ratios.
For example, in many cancer microarray studies, the actual percentage of cancer cells in a profiled sample may be as low as 30-40% [ 2 ] . Even when using techniques such as laser capture microdissection, which can improve tumor purity [ 3 ] , the relative contribution of cancer cells and non-cancer cells to the overall gene-expression profile remains uncertain.
PR was obtained in 85% purity, assuming that values of ε 280 and ε 546 for pR are the same as for bR solubilized in DMPC/cholate/SDS mixtures at pH 8 (ε 280 = 7.85 × 10 4cm -1M -1and ε 551 = 4.8 × 10 4cm -1M -1) [ 5 ] . This assumption is actually expected to underestimate the purity of pR produced, by up to ~20%, since the pR we expressed has 10 tryptophan and 14 tyrosine residues, as compared to 8 tryptophans and 11 tyrosines in bR from H. salinarum.
Protein purity was assessed by SDS-PAGE with Coomassie Blue by comparison with 99% pure BSA standards (Sigma) and shown to of equivalent purity (Fig.