The phrase "average negative control" is correct and usable in written English.
It can be used in scientific or experimental contexts, particularly in discussions about control groups in research studies.
Example: "In our experiment, we used an average negative control to compare the effects of the treatment on the test subjects."
Alternatives: "mean negative control" or "typical negative control".
To identify critical residues involved in ligand-induced signaling, clones were selected that showed Ca2+ flux below the value of (average negative control +3*SD), but with surface expression above a threshold value for FLAG of 100-3*SD 100-3*SDmean wild-type cofthel wells on each plate).
The output signal is expressed as MFI (median fluorescence intensity), and samples with an average signal >6 standard deviations of average negative control signals (typically 400 to 500 MFI) are regarded as positive.
Results were determined as the average of duplicate optical density (OD) readings for each sample minus [the average negative control OD reading plus 0.1], and using a cut-off of "zero" for positive and negative results.
This corrected optical density value (optical density minus average negative control) was used as the continuous outcome variable for statistical analysis.
The Parachek ELISA optical density result is reported as a numerical value, which is classified as positive or negative in relation to a cut-off value equal to the average negative control plus 0.10.
There were only two surface sites (both S2) from ECR cleaned patient-used endoscopes that were > 6.4 μg/cm2 protein before subtracting the average negative control (these were 8.990 and 6.962 μg/cm2 protein).
Each averaged treatment was normalized to its corresponding averaged negative control (DMSO) for that experiment.
Data from a given participant were excluded if they met any of the following criteria: average response to PHA <400 spot-forming cells (SFC /200,000 PBMC; average of negative control wells >20 SFC/200,000 PBMC; day 2 viability less than 66%; or blood obtained outside the allowable visit window.
Background was modeled for each mass of RNA as the average of negative control transcript counts plus three standard deviations.
The assay was repeated three times and a percent difference from the average of negative control siRNA transfected cells was calculated for each reported parameter.
The ratios of DENV-specific IgG subclass antibodies were calculated with the following formula: ratio = [(OD of sample - OD of blank) – (average of negative control)]/(OD IgG1/OD IgG2) and vice versa, where OD is the optical density of each sample.
