Sentence examples for all samples were checked from inspiring English sources

All samples were checked for one intronic SNP without finding any amplification (data not shown).

The rate of successfully amplified samples would however increase if the quality of all samples were checked prior to amplification.

To confirm the use of equal amounts of RNA in each experiment, all samples were checked in parallel for β-actin mRNA expression.

All samples were checked twice from two independent cDNA preparations.

All samples were checked with qPCR for their AOB/NOB ratios.

All samples were checked for specificity of amplification via Melting curve analysis.

Integrity of RNA for all samples was checked using the 2100 Bioanalyzer (Agilent Technologies).

RNA quality of all samples was checked by PBGD expression, used as a reference gene.

The RNA quality for all samples was checked by gel eletrophoresis analisys and spectrophotometric assays (data not shown).

The DNA quality for all samples was checked on a 1% agarose gel and concentration was measured using a NanoDrop Spectrophotometer.

All the control samples were checked and proved to be negative on a 2% agarose gel.