Sentence examples for by reference to standard from inspiring English sources

Cytokine titers were calculated by reference to standard curves, constructed with known amounts of recombinant cytokines.

Lycopene was quantified by reference to standard curves.

Molecular masses were estimated by reference to standard proteins (Fermentas, GmbH, St. Leon-Rot, Germany).

Cytokine concentrations were determined by reference to standard curves constructed with known amounts of mouse recombinant IL-4, IL-17, IFN-γ or TGF-β1.

Both studies also present relative abundance data for OTUs identified by reference to standard databases using amplicons from 16S hypervariable regions (see papers for details).

Molecular masses for the AR and Cx43 were estimated by reference to standard proteins (Fermentas, GmbH, St. Leon-Rot, Germany and Bio-Rad Labs, InCA, CA USA), respectively.

Primers and a probe for sequences of the surface gene of HBV were designed and quantification achieved by reference to standards containing known concentrations of the target sequence.

Carotenoid identification was carried out by comparing the retention times and absorption spectra characteristics (Additional file 1: Table S1) by reference to standards purchased from Sigma Aldrich.

Quantification was achieved by reference to standards of anthocyanins and other phenolic compounds, using LC-MS data to confirm identification of peaks.

Plasma concentrations of rucaparib and the carboxy metabolite were determined by reference to standards prepared in human plasma with fluorescence detection (λex 238/ λem 470 nm).

Values for angiotensinogen (AGT), prorenin and ACE mRNA expression were obtained by reference to standards curves generated using normal human liver, kidney and lung total RNA, respectively.