The post hoc test also showed a diurnal variation in control animals: in the left hemisphere, spine density was higher in the resting period than in the activity period (q=4.95, P<0.01; Fig. 6).
Without a doubt, the high variation in control values had a negative influence on the power of the experiment, but this could have been compensated for by increasing samples size, up to a limit.
However, if non-homogeneous bait supply is identified as a source of local variation in control success then the reduction in flight line distance is an appropriate strategic adjustment.
But some people produce less BDNF after exercise than others because they have a variation in the gene that controls BDNF production, though it's unknown whether they derive less cognitive benefit from exercise as a result.
Even when a variation in conditions occurs, modern process control methods are commonly able to gradually return the continuous process to another steady state again.
In a similar way, it was reported that rats treated with nitric oxide synthase inhibitor NG-nitro-L-arginine methyl ester (L-NAME) develop hypertension, with a variation in cecal microbiota compared to control normotensive rats [ 18].
Quality control was evaluated for each test by demanding a signal/blank ratio of >10 and a coefficient of variation in controls and blanks of <30%.
For example, a variation in the SMAD4 gene, which controls cell growth, was linked to weight.
Pinto, D., Marshall, C., Feuk, L. & Scherer, S.W. Copy-number variation in control population cohorts.
However, substantial variation in control limb phenotype was observed radiographically due to preexisting hip dysplasia (Fig. 1C).
Variation in control of tubulin was not as great as that of proinsulin.
