β-actin was used as the housekeeping gene to standardise between samples.
Many factors such as anatomical location, patient demographics and medical history, surgical operation performed or the age and type of scar, the injury that caused it and the lack of controls, are impossible to standardise between trials [ 22].
Protocol and analysis Muscle strips generating stable spontaneous contractions were exposed to 40 mmol/l KCl solution (K+ substituted for Na in the physiological saline) for 2 min to obtain a measure of maximal activity, which could also be used to standardise between preparations.
The uptake of radiotracers in the tumours was calculated as a standard uptake value (SUV) [38] in which the regional activity is related to the total injected dose and normalised to standardise for between-individual comparisons.
A systematic review of the toxicity of polymyxin revealed that in the old literature, incidences of both toxicities were reported to be considerably high, while new evidence shows less toxicity than previously reported although the definition of nephrotoxicity was not standardised between the studies [30].
In Iceland, assessment and evaluation of pupils is conducted internally, and is not standardised between different institutions.
Details such as the boiler, the two-cylinders and valve gear were standardised between the classes, although a taper boiler was used on the S15 and N15 classes, as opposed to the parallel boiler of the H15 class.
For example, metabolic rate is influenced by temperature and activity cycle [19], [20], variables which have not always been standardised between experiments.
To correct for inter-experimental error between original and control datasets, all 790 probes obtained in the stringent analysis were standardised between the two experiments by dividing expression values of the 790 genes from the original dataset and the new dataset by the average expression ratio of the two datasets per probe in Microsoft excel (Microsoft Corporation, Redmond WA, USA).
To correct for inter-experimental error, all 790 probes were standardised between the two experiments by dividing the 790 genes from the original dataset and the new dataset by the average expression ratio per probe in Microsoft excel (Microsoft Corporation, Redmond WA, USA).
All procedures were standardised between centres.
