For every food additive included in the positive list, specifications, including the criteria on purity and the origin of the food additive, shall be laid down.
Inhibition of PI3K signalling disrupts Hhex positive ADE specification, but does not interfere with mesendoderm induction.
Pixels that are stained but do not meet the positive colour specification are counted as negative-stained pixels; this is used to determine the overall percentage of positive-stained pixels.
The instrument coefficients are consistently significant and positive across all specifications.
However, clinical quality specifications (sensitivity, specificity, positive and negative predictive values, etc).
It is most convenient to constrain these to be positive through the specification of lognormal priors where for instance α = exp and γ ∼ N 0, 100).
Per manufacturer's specifications, the sensitivity, specificity, positive predictive value, and negative predictive value of this kit are 96%, 97%, 90%, and 99%, respectively).
On the other hand, the effect of GDS is shown to be positive with significance in specifications (2), (3) and (5).
During the clinical validation study, less than 2% of the qPCR plates had to be repeated because of failure to meet both qPCR positive and negative control specifications.
Positive estimates in this specification test would then suggest that estimates of the impact on subsequent earnings could be spurious.
